[techtalk] Simple Linux Firewall
Hi! I'm building a WebDAV/DeltaV playground for a consultant on a Linux box of his -- part-time job for this part-time student. On my personal Gateway (W98 SE), I use the ZoneAlarm freeware because I have a cable modem and the Gateway is always connected to the Internet. ZoneAlarm is a firewall for the masses -- just download, install and it works without any tweaking -- or much understanding on my part. When I run the GRC Port Probe test www.grc.com) my Gateway, everything "shows" up as running in Stealth. Makes me happy. Different story on the Linux box (which has its own cable connection to the net). It's interaction should be limited to the http (for serving and surfing), kibitz, irc (X-chat and BitchX) and maybe, maybe talk. (No email -- I'm content to use Hotmail.) When I run the GRC Port Probe on the Linux box, ports 25 (SMTP) and 113 (IDENT) show up as Open. The other ports show up as Closed -- not Stealth. Is there a simple utility I can slap on this Linux box -- similar to idiot-proof ZoneAlarm -- that will put all the superfluous ports in Stealth mode? Barbara (using Linux since September 2000) PS Do I need port 113 (IDENT) for IRC? ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
[techtalk] talk on RedHat 6.2
Anyone out there using this program? It just refuses to work. My /etc/inetd.conf file looks like this: talk dgram udp wait nobody.tty /usr/sbin/tcpd in.talkd - d dtalk dgram udp wait nobody.tty /usr/sbin/tcpd in.talkd - d Thanks, Barbara ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] talk on RedHat 6.2
Le 12 octobre 2000, m20bi écrivait : > talk dgram udp wait nobody.tty /usr/sbin/tcpd in.talkd - d > dtalk dgram udp wait nobody.tty /usr/sbin/tcpd in.talkd - d Is the space really intended in '- d'? I think you mean '-d', but even then, it will run in debug mode, one thing you do not want when running through inetd. Oh and by the way, did you restart inetd? /var/log/messages should give you some hints, do a 'tail -f /var/log/messages' and then try again. Or send us the error messages. olive -- Whoa...I did a 'zcat /vmlinuz > /dev/audio' and I think I heard God... ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Simple Linux Firewall
The quick an easy method would be: ipchains -A input -p tcp -y -l -j DENY doing this will allow tcp connections ONLY initiated by you to communicate with the box (Note: there are scans types that can sneak past this) but general scans won't even be responded to (so you can with your "stealth" token :) ) since you seem to want people to beable to access your port 80 then putting a rule like: ipchains -I input -d 1.1.1.1 80 -l -j ACCEPT (replace 1.1.1.1 with your ip) ident is only needed by some irc networks.. if the ones you feel you need to access require this.. then add the appropriate rule.. btw there are lots of ipchains howtos out there.. read up.. :) /"\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \ / ASCII Ribbon Campaign [EMAIL PROTECTED] X - NO HTML/RTF in e-mail http://www.curious.org/ / \ - NO Word docs in e-mail"This quote is false." -anon On Thu, 12 Oct 2000, m20bi wrote: > Hi! > > I'm building a WebDAV/DeltaV playground for a consultant on a Linux box of > his -- part-time job for this part-time student. On my personal Gateway (W98 > SE), I use the ZoneAlarm freeware because I have a cable modem and the > Gateway is always connected to the Internet. ZoneAlarm is a firewall for the > masses -- just download, install and it works without any tweaking -- or > much understanding on my part. When I run the GRC Port Probe test > www.grc.com) my Gateway, everything "shows" up as running in Stealth. Makes > me happy. > > Different story on the Linux box (which has its own cable connection to the > net). It's interaction should be limited to the http (for serving and > surfing), kibitz, irc (X-chat and BitchX) and maybe, maybe talk. (No > email -- I'm content to use Hotmail.) When I run the GRC Port Probe on the > Linux box, ports 25 (SMTP) and 113 (IDENT) show up as Open. The other ports > show up as Closed -- not Stealth. > > Is there a simple utility I can slap on this Linux box -- similar to > idiot-proof ZoneAlarm -- that will put all the superfluous ports in Stealth > mode? > > Barbara (using Linux since September 2000) > > PS Do I need port 113 (IDENT) for IRC? > > > ___ > techtalk mailing list > [EMAIL PROTECTED] > http://www.linux.org.uk/mailman/listinfo/techtalk > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
RE: [techtalk] talk on RedHat 6.2
> did you restart inetd? > > /var/log/messages should give you some hints, do a 'tail -f > /var/log/messages' and then try again. Or send us the error messages. Here's what I did: Removed d from inetd.conf file. Restarted inet daemon with kill SIGHUP . Logged on as guest on tty2 and tty3. Issued 'talk guest tty2' from tty3. Talk stalled with 'checking for invitation on caller's machine.' Got out of talk with Ctrl-C and then tried 'talk guest tty3' from tty2. Same error. Nothing shows up in the /var/log/messages file. Decided to shutdown and start from scratch. Same results. Any suggestions? Barbara ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
[techtalk] Re: talk on RedHat 6.2
m20bi wrote: > Removed d from inetd.conf file. Restarted inet daemon with kill SIGHUP > . Logged on as guest on tty2 and tty3. Issued 'talk guest > tty2' from tty3. Talk stalled with 'checking for invitation on caller's > machine.' Got out of talk with Ctrl-C and then tried 'talk guest tty3' from > tty2. Same error. Nothing shows up in the /var/log/messages file. > Decided to shutdown and start from scratch. Same results. You're right, that -should- work. > Any suggestions? I have vague memories of having a LOT of trouble with talk if the hostname doesn't backwards-resolve properly. Or something weird like that. It was to do with hostnames. Haven't used talk for ages and my memory deceives me. Sorry. Try 'talk guest@localhost' or somesuch? bekj (am I supposed to post an intro?) -- : --Hacker-Neophile-Eclectic-Geek-Grrl-Queer-Disabled-Boychick-- : [EMAIL PROTECTED] http://www.tertius.net.au/~gossamer/ : Only those who dare to fail greatly can ever achieve greatly. : -- R Kennedy ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] talk on RedHat 6.2
Le 12 octobre 2000 a 13:01, m20bi a écrit : > Logged on as guest on tty2 and tty3. Issued 'talk guest > tty2' from tty3. Talk stalled with 'checking for invitation on caller's > machine.' Got out of talk with Ctrl-C and then tried 'talk guest tty3' from > tty2. Same error. Nothing shows up in the /var/log/messages file. The 'stall' is normal, talk on your side is actually waiting for the other side to answer your talk request (as when the phone rings). On the other side, a message such as the following should appear: Message from Talk_Daemon@chloe at 20:21 ... talk: connection requested by [EMAIL PROTECTED] talk: respond with: talk [EMAIL PROTECTED] then you can answer on the other tty. You can also try 'ytalk' which is a better talk (ytalk -x to avoid getting a screenful of windows). olive -- Olivier Tharan, <[EMAIL PROTECTED]> I simply trew off the whole HP junk and replaced it by working Gnu versions where possible ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
[techtalk] Mail server
How do I go about setting up a SMTP and POP3 server in Red Hat 6.2? What software should I use? Any tips/advice? - Kathy
Re: [techtalk] Mail server
depends. :> on what MTA you're going to use (sendmail? etc?), how many accounts are going to be on the machine, lots of things. bet you there'd be a howto somewhere on this (maybe on red hat's website?), or you might want to check out the very excellent Essential System Administration book by O'Reilly. While not quite in-depth, offers you somewhat of an overview as to how this is all done. good luck! --alissa --- Kath <[EMAIL PROTECTED]> wrote: > How do I go about setting up a SMTP and POP3 server > in Red Hat 6.2? What software should I use? Any > tips/advice? > > - Kathy > __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
Well what we want is to be able to have people in one of our labs email each other. Its a school, so say 120 accounts. I'm a idiot, what exactly is a MTA? I'm really new at this and if someone could explain all this in simple words like "vroom vroom", "go fast" and "nice", it would be much appreciated :) - Kathleen - Original Message - From: "alissa bader" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, October 12, 2000 4:48 PM Subject: Re: [techtalk] Mail server > depends. :> > > on what MTA you're going to use (sendmail? etc?), how > many accounts are going to be on the machine, lots of > things. > > bet you there'd be a howto somewhere on this (maybe on > red hat's website?), or you might want to check out > the very excellent Essential System Administration > book by O'Reilly. While not quite in-depth, offers > you somewhat of an overview as to how this is all > done. > > good luck! > > --alissa > > --- Kath <[EMAIL PROTECTED]> wrote: > > How do I go about setting up a SMTP and POP3 server > > in Red Hat 6.2? What software should I use? Any > > tips/advice? > > > > - Kathy > > > > > __ > Do You Yahoo!? > Get Yahoo! Mail - Free email you can access from anywhere! > http://mail.yahoo.com/ > > ___ > techtalk mailing list > [EMAIL PROTECTED] > http://www.linux.org.uk/mailman/listinfo/techtalk > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
There is a Mail-Administrator-HOWTO on the LDP site, at http://www.linuxdoc.org/HOWTO/Mail-Administrator-HOWTO.html Regards, -- David C. Merrill, Ph.D. LDP Collection Editor & Coordinator www.LinuxDoc.org ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
- Original Message - From: "Kath" <[EMAIL PROTECTED]> To: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, October 12, 2000 4:53 PM Subject: Re: [techtalk] Mail server > Well what we want is to be able to have people in one of our labs email each > other. Its a school, so say 120 accounts. > > I'm a idiot, what exactly is a MTA? > > I'm really new at this and if someone could explain all this in simple words > like "vroom vroom", "go fast" and "nice", it would be much appreciated :) > > - Kathleen Even in the best of cases, mail server administration is no piece of cake. I managed to muddle my way through it earlier this year for the first time. I managed it and I'm sure you can too. I'd start with the HOWTO I just sent in another message. That will give you a general idea of what's involved, and introduce the terminology you'll need to know to even discuss the subject with others. Your biggest decision is the MTA you decide to use. MTA means Mail Transfer Agent, and it is the software that transports mail from one machine to another. Some examples are qmail and sendmail. A MUA, or Mail User Agent, is the software you use to actually read your mail, such as mutt or pine. HTH, -- David C. Merrill, Ph.D. LDP Collection Editor & Coordinator www.LinuxDoc.org ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
MTA is your Messaging Transfer Agent. According to my handy, dandy dictionary of computing (http://www.instantweb.com/~foldoc/contents.html), here is the definition: --- Message Transfer Agent (MTA) The program responsible for delivering e-mail messages. Upon receiving a message from a Mail User Agent or another MTA it stores it temporarily locally and analyses the recipients and either delivers it (local addressee) or forwards it to another MTA (routing). In either case it may edit and/or add to the message headers. --- So, an example of an MTA would be sendmail. Hope this helps. Nancy On Thu, 12 Oct 2000, Kath wrote: > Well what we want is to be able to have people in one of our labs email each > other. Its a school, so say 120 accounts. > > I'm a idiot, what exactly is a MTA? > > I'm really new at this and if someone could explain all this in simple words > like "vroom vroom", "go fast" and "nice", it would be much appreciated :) > > - Kathleen > > - Original Message - > From: "alissa bader" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Thursday, October 12, 2000 4:48 PM > Subject: Re: [techtalk] Mail server > > > > depends. :> > > > > on what MTA you're going to use (sendmail? etc?), how > > many accounts are going to be on the machine, lots of > > things. > > > > bet you there'd be a howto somewhere on this (maybe on > > red hat's website?), or you might want to check out > > the very excellent Essential System Administration > > book by O'Reilly. While not quite in-depth, offers > > you somewhat of an overview as to how this is all > > done. > > > > good luck! > > > > --alissa > > > > --- Kath <[EMAIL PROTECTED]> wrote: > > > How do I go about setting up a SMTP and POP3 server > > > in Red Hat 6.2? What software should I use? Any > > > tips/advice? > > > > > > - Kathy > > > > > > > > > __ > > Do You Yahoo!? > > Get Yahoo! Mail - Free email you can access from anywhere! > > http://mail.yahoo.com/ > > > > ___ > > techtalk mailing list > > [EMAIL PROTECTED] > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > ___ > techtalk mailing list > [EMAIL PROTECTED] > http://www.linux.org.uk/mailman/listinfo/techtalk > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
Can you have a mail server without a domain name for it (just an IP)? - Kathy - Original Message - From: "Nancy Corbett" <[EMAIL PROTECTED]> To: "Kath" <[EMAIL PROTECTED]> Cc: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, October 12, 2000 5:22 PM Subject: Re: [techtalk] Mail server > > MTA is your Messaging Transfer Agent. According to my handy, dandy > dictionary of computing (http://www.instantweb.com/~foldoc/contents.html), > here is the definition: > > --- > Message Transfer Agent (MTA) The program responsible for > delivering e-mail messages. Upon receiving a message from a Mail User > Agent or another MTA it stores it temporarily locally and analyses the > recipients and either delivers it (local addressee) or forwards it to > another MTA (routing). In either case it may edit and/or add to the > message headers. > --- > > So, an example of an MTA would be sendmail. > > Hope this helps. > Nancy > > On Thu, 12 Oct 2000, Kath wrote: > > > Well what we want is to be able to have people in one of our labs email each > > other. Its a school, so say 120 accounts. > > > > I'm a idiot, what exactly is a MTA? > > > > I'm really new at this and if someone could explain all this in simple words > > like "vroom vroom", "go fast" and "nice", it would be much appreciated :) > > > > - Kathleen > > > > - Original Message - > > From: "alissa bader" <[EMAIL PROTECTED]> > > To: <[EMAIL PROTECTED]> > > Sent: Thursday, October 12, 2000 4:48 PM > > Subject: Re: [techtalk] Mail server > > > > > > > depends. :> > > > > > > on what MTA you're going to use (sendmail? etc?), how > > > many accounts are going to be on the machine, lots of > > > things. > > > > > > bet you there'd be a howto somewhere on this (maybe on > > > red hat's website?), or you might want to check out > > > the very excellent Essential System Administration > > > book by O'Reilly. While not quite in-depth, offers > > > you somewhat of an overview as to how this is all > > > done. > > > > > > good luck! > > > > > > --alissa > > > > > > --- Kath <[EMAIL PROTECTED]> wrote: > > > > How do I go about setting up a SMTP and POP3 server > > > > in Red Hat 6.2? What software should I use? Any > > > > tips/advice? > > > > > > > > - Kathy > > > > > > > > > > > > > __ > > > Do You Yahoo!? > > > Get Yahoo! Mail - Free email you can access from anywhere! > > > http://mail.yahoo.com/ > > > > > > ___ > > > techtalk mailing list > > > [EMAIL PROTECTED] > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > ___ > > techtalk mailing list > > [EMAIL PROTECTED] > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
You know, I am not 100% sure, but I believe you have to have a domain name. I say that only because I've never received an email with something like [EMAIL PROTECTED] I don't know why it wouldn't work, but I've never seen it done that way. On Thu, 12 Oct 2000, Kath wrote: > Can you have a mail server without a domain name for it (just an IP)? > > - Kathy > > - Original Message - > From: "Nancy Corbett" <[EMAIL PROTECTED]> > To: "Kath" <[EMAIL PROTECTED]> > Cc: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > Sent: Thursday, October 12, 2000 5:22 PM > Subject: Re: [techtalk] Mail server > > > > > > MTA is your Messaging Transfer Agent. According to my handy, dandy > > dictionary of computing (http://www.instantweb.com/~foldoc/contents.html), > > here is the definition: > > > > --- > > Message Transfer Agent (MTA) The program responsible for > > delivering e-mail messages. Upon receiving a message from a Mail User > > Agent or another MTA it stores it temporarily locally and analyses the > > recipients and either delivers it (local addressee) or forwards it to > > another MTA (routing). In either case it may edit and/or add to the > > message headers. > > --- > > > > So, an example of an MTA would be sendmail. > > > > Hope this helps. > > Nancy > > > > On Thu, 12 Oct 2000, Kath wrote: > > > > > Well what we want is to be able to have people in one of our labs email > each > > > other. Its a school, so say 120 accounts. > > > > > > I'm a idiot, what exactly is a MTA? > > > > > > I'm really new at this and if someone could explain all this in simple > words > > > like "vroom vroom", "go fast" and "nice", it would be much appreciated > :) > > > > > > - Kathleen > > > > > > - Original Message - > > > From: "alissa bader" <[EMAIL PROTECTED]> > > > To: <[EMAIL PROTECTED]> > > > Sent: Thursday, October 12, 2000 4:48 PM > > > Subject: Re: [techtalk] Mail server > > > > > > > > > > depends. :> > > > > > > > > on what MTA you're going to use (sendmail? etc?), how > > > > many accounts are going to be on the machine, lots of > > > > things. > > > > > > > > bet you there'd be a howto somewhere on this (maybe on > > > > red hat's website?), or you might want to check out > > > > the very excellent Essential System Administration > > > > book by O'Reilly. While not quite in-depth, offers > > > > you somewhat of an overview as to how this is all > > > > done. > > > > > > > > good luck! > > > > > > > > --alissa > > > > > > > > --- Kath <[EMAIL PROTECTED]> wrote: > > > > > How do I go about setting up a SMTP and POP3 server > > > > > in Red Hat 6.2? What software should I use? Any > > > > > tips/advice? > > > > > > > > > > - Kathy > > > > > > > > > > > > > > > > > __ > > > > Do You Yahoo!? > > > > Get Yahoo! Mail - Free email you can access from anywhere! > > > > http://mail.yahoo.com/ > > > > > > > > ___ > > > > techtalk mailing list > > > > [EMAIL PROTECTED] > > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > > > > > ___ > > > techtalk mailing list > > > [EMAIL PROTECTED] > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
Nope, just tried sending a test email to myself by doing [EMAIL PROTECTED] and it didn't work. :( Ah well, we will just have to use our crappy Lotus server to do email. I still can't believe this guy sold our former superintendent to move everything (Website, email, some of the databasing) for our school over to Lotus Domino/Notes. I hate Lotus! Luckily I got the website back on a Debian Linux 2.2 box which I'll be converted to OpenBSD 2.7 as soon as I get more fluent in it. - Kathleen - Original Message - From: "Nancy Corbett" <[EMAIL PROTECTED]> To: "Kath" <[EMAIL PROTECTED]> Cc: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> Sent: Thursday, October 12, 2000 5:33 PM Subject: Re: [techtalk] Mail server > > You know, I am not 100% sure, but I believe you have to have a domain > name. I say that only because I've never received an email with something > like [EMAIL PROTECTED] I don't know why it wouldn't work, but I've > never seen it done that way. > > On Thu, 12 Oct 2000, Kath wrote: > > > Can you have a mail server without a domain name for it (just an IP)? > > > > - Kathy > > > > - Original Message - > > From: "Nancy Corbett" <[EMAIL PROTECTED]> > > To: "Kath" <[EMAIL PROTECTED]> > > Cc: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Thursday, October 12, 2000 5:22 PM > > Subject: Re: [techtalk] Mail server > > > > > > > > > > MTA is your Messaging Transfer Agent. According to my handy, dandy > > > dictionary of computing (http://www.instantweb.com/~foldoc/contents.html), > > > here is the definition: > > > > > > --- > > > Message Transfer Agent (MTA) The program responsible for > > > delivering e-mail messages. Upon receiving a message from a Mail User > > > Agent or another MTA it stores it temporarily locally and analyses the > > > recipients and either delivers it (local addressee) or forwards it to > > > another MTA (routing). In either case it may edit and/or add to the > > > message headers. > > > --- > > > > > > So, an example of an MTA would be sendmail. > > > > > > Hope this helps. > > > Nancy > > > > > > On Thu, 12 Oct 2000, Kath wrote: > > > > > > > Well what we want is to be able to have people in one of our labs email > > each > > > > other. Its a school, so say 120 accounts. > > > > > > > > I'm a idiot, what exactly is a MTA? > > > > > > > > I'm really new at this and if someone could explain all this in simple > > words > > > > like "vroom vroom", "go fast" and "nice", it would be much appreciated > > :) > > > > > > > > - Kathleen > > > > > > > > - Original Message - > > > > From: "alissa bader" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Thursday, October 12, 2000 4:48 PM > > > > Subject: Re: [techtalk] Mail server > > > > > > > > > > > > > depends. :> > > > > > > > > > > on what MTA you're going to use (sendmail? etc?), how > > > > > many accounts are going to be on the machine, lots of > > > > > things. > > > > > > > > > > bet you there'd be a howto somewhere on this (maybe on > > > > > red hat's website?), or you might want to check out > > > > > the very excellent Essential System Administration > > > > > book by O'Reilly. While not quite in-depth, offers > > > > > you somewhat of an overview as to how this is all > > > > > done. > > > > > > > > > > good luck! > > > > > > > > > > --alissa > > > > > > > > > > --- Kath <[EMAIL PROTECTED]> wrote: > > > > > > How do I go about setting up a SMTP and POP3 server > > > > > > in Red Hat 6.2? What software should I use? Any > > > > > > tips/advice? > > > > > > > > > > > > - Kathy > > > > > > > > > > > > > > > > > > > > > __ > > > > > Do You Yahoo!? > > > > > Get Yahoo! Mail - Free email you can access from anywhere! > > > > > http://mail.yahoo.com/ > > > > > > > > > > ___ > > > > > techtalk mailing list > > > > > [EMAIL PROTECTED] > > > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > > > > > > > > > ___ > > > > techtalk mailing list > > > > [EMAIL PROTECTED] > > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > > > > > > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
btw... Moongroup consulting (www.moongroup.com) has some excellent resources involving setting up mail on a Linux platform. They also have a sendmail mailing list which I subscribe to. It will not add a lot of traffic to your inbox, but serves as a really great forum for asking anything specific to any unix-based email software. On Thu, 12 Oct 2000, Kath wrote: > How do I go about setting up a SMTP and POP3 server in Red Hat 6.2? What software >should I use? Any tips/advice? > > - Kathy > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
I vaugly remeber some debate on some list that delt with dns/bind using dotted decimal notation for MX records.. bind doesn't support this.. there are other nameservers that will.. however unless such things realy flood the internet space.. mail is going to point to domains /"\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \ / ASCII Ribbon Campaign [EMAIL PROTECTED] X - NO HTML/RTF in e-mail http://www.curious.org/ / \ - NO Word docs in e-mail"This quote is false." -anon On Thu, 12 Oct 2000, Nancy Corbett wrote: > > You know, I am not 100% sure, but I believe you have to have a domain > name. I say that only because I've never received an email with something > like [EMAIL PROTECTED] I don't know why it wouldn't work, but I've > never seen it done that way. > > On Thu, 12 Oct 2000, Kath wrote: > > > Can you have a mail server without a domain name for it (just an IP)? > > > > - Kathy > > > > - Original Message - > > From: "Nancy Corbett" <[EMAIL PROTECTED]> > > To: "Kath" <[EMAIL PROTECTED]> > > Cc: "alissa bader" <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]> > > Sent: Thursday, October 12, 2000 5:22 PM > > Subject: Re: [techtalk] Mail server > > > > > > > > > > MTA is your Messaging Transfer Agent. According to my handy, dandy > > > dictionary of computing (http://www.instantweb.com/~foldoc/contents.html), > > > here is the definition: > > > > > > --- > > > Message Transfer Agent (MTA) The program responsible for > > > delivering e-mail messages. Upon receiving a message from a Mail User > > > Agent or another MTA it stores it temporarily locally and analyses the > > > recipients and either delivers it (local addressee) or forwards it to > > > another MTA (routing). In either case it may edit and/or add to the > > > message headers. > > > --- > > > > > > So, an example of an MTA would be sendmail. > > > > > > Hope this helps. > > > Nancy > > > > > > On Thu, 12 Oct 2000, Kath wrote: > > > > > > > Well what we want is to be able to have people in one of our labs email > > each > > > > other. Its a school, so say 120 accounts. > > > > > > > > I'm a idiot, what exactly is a MTA? > > > > > > > > I'm really new at this and if someone could explain all this in simple > > words > > > > like "vroom vroom", "go fast" and "nice", it would be much appreciated > > :) > > > > > > > > - Kathleen > > > > > > > > - Original Message - > > > > From: "alissa bader" <[EMAIL PROTECTED]> > > > > To: <[EMAIL PROTECTED]> > > > > Sent: Thursday, October 12, 2000 4:48 PM > > > > Subject: Re: [techtalk] Mail server > > > > > > > > > > > > > depends. :> > > > > > > > > > > on what MTA you're going to use (sendmail? etc?), how > > > > > many accounts are going to be on the machine, lots of > > > > > things. > > > > > > > > > > bet you there'd be a howto somewhere on this (maybe on > > > > > red hat's website?), or you might want to check out > > > > > the very excellent Essential System Administration > > > > > book by O'Reilly. While not quite in-depth, offers > > > > > you somewhat of an overview as to how this is all > > > > > done. > > > > > > > > > > good luck! > > > > > > > > > > --alissa > > > > > > > > > > --- Kath <[EMAIL PROTECTED]> wrote: > > > > > > How do I go about setting up a SMTP and POP3 server > > > > > > in Red Hat 6.2? What software should I use? Any > > > > > > tips/advice? > > > > > > > > > > > > - Kathy > > > > > > > > > > > > > > > > > > > > > __ > > > > > Do You Yahoo!? > > > > > Get Yahoo! Mail - Free email you can access from anywhere! > > > > > http://mail.yahoo.com/ > > > > > > > > > > ___ > > > > > techtalk mailing list > > > > > [EMAIL PROTECTED] > > > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > > > > > > > > > ___ > > > > techtalk mailing list > > > > [EMAIL PROTECTED] > > > > http://www.linux.org.uk/mailman/listinfo/techtalk > > > > > > > > > > > > > > > ___ > techtalk mailing list > [EMAIL PROTECTED] > http://www.linux.org.uk/mailman/listinfo/techtalk > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
[techtalk] .fetchmailrc problems
Hi everyone, I've decided to give up on passing commandline options to fetchmail and write a .fetchmailrc. I don't have anything listening on port 25 so my fetchmail commandline was: "fetchmail -K -a -u [username] -d 600 -m "/usr/bin/procmail -d mary" [server] This worked fine. my .fetchmailrc is currently: set daemon 600 set logfile ~mary/fetchmail.log poll [server] user [username] pass [password] is mary nokeep fetchall mda "/usr/bin/procmail -d %T" ; and while this fetchs the messages and delivers them I get an error message from syslogd@[machine]: [machine] procmail[pid] : Descriptor 2 was not open This error message is delivered to the tty. Also despite the nokeep option, it is not flushing messages - which I belive is fetchmail's standard behaviour when there is an error on delivery. I have tried changing the mda line to: mda "/usr/bin/procmail -d %T 2>>~mary/fetchmail.log" and this doesn't change anything. So what's wrong with that .fetchmailrc? - the man page isn't very descriptive and most of the fetchmailrcs I found with google are using fetchmail's standard delivery option via SMTP to port 25. Thanks, Mary. ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
On Thu, 12 Oct 2000, Kath wrote: > Can you have a mail server without a domain name for it (just an IP)? I do recall having a linux server set up just this way in high school (the addresses were actually something like user@[255.255.255.255] as I recall, but don't take that for gospel -- this was five years ago and I was a user, not an admin on that box) I strongly suggest *not* doing that, however. V. ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Simple Linux Firewall
m20bi wrote: > > Hi! > > I'm building a WebDAV/DeltaV playground for a consultant on a Linux box of > his -- part-time job for this part-time student. On my personal Gateway (W98 > SE), I use the ZoneAlarm freeware because I have a cable modem and the > Gateway is always connected to the Internet. ZoneAlarm is a firewall for the > masses -- just download, install and it works without any tweaking -- or > much understanding on my part. When I run the GRC Port Probe test > www.grc.com) my Gateway, everything "shows" up as running in Stealth. Makes > me happy. > > Different story on the Linux box (which has its own cable connection to the > net). It's interaction should be limited to the http (for serving and > surfing), kibitz, irc (X-chat and BitchX) and maybe, maybe talk. (No > email -- I'm content to use Hotmail.) When I run the GRC Port Probe on the > Linux box, ports 25 (SMTP) and 113 (IDENT) show up as Open. The other ports > show up as Closed -- not Stealth. > > Is there a simple utility I can slap on this Linux box -- similar to > idiot-proof ZoneAlarm -- that will put all the superfluous ports in Stealth > mode? > > Barbara (using Linux since September 2000) > > PS Do I need port 113 (IDENT) for IRC? > One of the things you might do is get "pmfirewall" or "seawall." Both of these are scripts that will write your chains for you. It's a quick way of getting something up and you can add and subtract to the chains as you learn. There is also a hardening script called "Bastille", if I got the spelling right. It will help shore your system up. seawall -- http://seawall.sourceforge.net/ pmfirewall -- http://www.pointman.org/ There is also a book you can download online that is worth your while @ - http://pages.infinit.net/lotus1/opendocs/book.htm As an aside I found OpenBSD much easier to use as a firewall. I find ipf and nat easier to understand than ipchains and masquerade. hth, kent -- "Neurosis is the way of avoiding non-being by avoiding being." - Paul Tillich, American theologian (1886-1965). ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
if you only have an ip address though, you might be able to send mail, but how would you receive it? i mean, if you are [EMAIL PROTECTED], you could send mail out, sure. but if users wanted to respond to you, they'd have to send a message to user@ipaddress, not user@domainname. and this might throw a lot of people off. also, i haven't looked into configuring sendmail that much really, but i do know that you need to have the domain name in sendmail.domains in order for the machine to accept/send out stuff. or hrm. how would this work with just ip addresses? anyone know if there's an rfc or anything regarding this out there somewhere? --alissa --- Vinnie <[EMAIL PROTECTED]> wrote: > > On Thu, 12 Oct 2000, Kath wrote: > > > Can you have a mail server without a domain name > for it (just an IP)? > > I do recall having a linux server set up just this > way in high school (the > addresses were actually something like > user@[255.255.255.255] as I recall, > but don't take that for gospel -- this was five > years ago and I was a > user, not an admin on that box) > > I strongly suggest *not* doing that, however. > > V. > > > ___ > techtalk mailing list > [EMAIL PROTECTED] > http://www.linux.org.uk/mailman/listinfo/techtalk __ Do You Yahoo!? Get Yahoo! Mail - Free email you can access from anywhere! http://mail.yahoo.com/ ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: [techtalk] Mail server
On Thu, 12 Oct 2000, alissa bader wrote: > if you only have an ip address though, you might be > able to send mail, but how would you receive it? well, I just sent mail from my work account to surmonde@[63.68.131.237] and received it here. I suspect that this *may* require specific setup of your MTA (but I could be wrong) but apparently works (of course, you have to have the right IP address -- obviously, if you don't have sendmail on your machine and relay through someone, then you'd have to have the IP of the server you receive mail on, *not* your workstation, but I think that's apparent) > not user@domainname. and this might throw a lot of > people off. You bet. Like I said, I don't suggest it, but it is technically possible. > also, i haven't looked into configuring sendmail that > much really, but i do know that you need to have the > domain name in sendmail.domains in order for the > machine to accept/send out stuff. or hrm. how would > this work with just ip addresses? Someone want to test send something to their IP on a box where they know the mail set up (I don't admin this box) and tell us? Anyway, this is (I hope) all academic, because I still don't think it's a good idea -- first because of the obvious social problems (try remember an email address is user@IP vs user@domain -- not to mention remember those square brackets and such) and second because it's a lot easier to update DNS than to try to get everyone, once they remember an IP address, to change to a different IP address, should you have to change IPs (not to mention scalability issues, etc etc) > anyone know if there's an rfc or anything regarding > this out there somewhere? I tried searching the RFCs and decided there's way too many for me to want to read :) V. ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
RFCs (was Re: [techtalk] Mail server)
> I tried searching the RFCs and decided there's way too many for me to want > to read :) Here are some good rfcs to start with: gigabit and trends: http://www.faqs.org/rfcs/rfc1216.html Response to the above: slow networks: http://www.faqs.org/rfcs/rfc1217.html an early wireless network standard: http://www.faqs.org/rfcs/rfc1149.html above with QOS: http://www.faqs.org/rfcs/rfc2549.html peg-dhcp: http://www.faqs.org/rfcs/rfc2322.html RITA troubleshooting: http://www.faqs.org/rfcs/rfc2321.html Security Guidlines: http://www.faqs.org/rfcs/rfc2323.html And the most important for last: IMPS http://www.faqs.org/rfcs/rfc2795.html ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: RFCs (was Re: [techtalk] Mail server)
On Thu, 12 Oct 2000, curious wrote: > > I tried searching the RFCs and decided there's way too many for me to want > > to read :) > > > Here are some good rfcs to start with: > gigabit and trends: > http://www.faqs.org/rfcs/rfc1216.html okay, what's this have to do with the use of IP addresses rather than Domain names in DNS? I meant, when I searched for RFCs relavent to email, there were too many -- I skimmed through two or three that looked most relavent, didn't find what I was looking for, and said 'Hey, my test message went through...well, I guess it's proof I'm not smoking something this time, at least' V. ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: RFCs (was Re: [techtalk] Mail server)
all of the RFC's I posted were "april 1st" RFC's like the infinate monkey protocol, ip over avian carriers.. etc.. I was tring to bring light to reading RFCs by pointing out some of the lighter ones.. sorry for the confusion, JL /"\ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . \ / ASCII Ribbon Campaign [EMAIL PROTECTED] X - NO HTML/RTF in e-mail http://www.curious.org/ / \ - NO Word docs in e-mail"This quote is false." -anon On Thu, 12 Oct 2000, Vinnie wrote: > On Thu, 12 Oct 2000, curious wrote: > > > > I tried searching the RFCs and decided there's way too many for me to want > > > to read :) > > > > > > Here are some good rfcs to start with: > > gigabit and trends: > > http://www.faqs.org/rfcs/rfc1216.html > > okay, what's this have to do with the use of IP addresses rather than > Domain names in DNS? > > I meant, when I searched for RFCs relavent to email, there were too many > -- I skimmed through two or three that looked most relavent, didn't find > what I was looking for, and said 'Hey, my test message went > through...well, I guess it's proof I'm not smoking something this time, at > least' > > V. > ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
Re: RFCs (was Re: [techtalk] Mail server)
On Thu, 12 Oct 2000, curious wrote: > all of the RFC's I posted were "april 1st" RFC's like the infinate monkey > protocol, ip over avian carriers.. etc.. > I was tring to bring light to reading RFCs by pointing out some of the > lighter ones.. duh..can we say 'one track mind' (as in, what-does-vinnie-have-these-days?) the sad part is I actually went to the first two, and didn't catch on to this, which is really sad considering that I've *read* most of these :P btw, the twelve truths of networking (rfc 1925, as I recall) is esspecially good, and I strongly believe that everyone should print out oa copy and pin it on their cube ;P V. ___ techtalk mailing list [EMAIL PROTECTED] http://www.linux.org.uk/mailman/listinfo/techtalk
