/* HINT: Search archives @ http://www.indyramp.com/masq/ before posting! */
IF you're using the PPPoE, set your ppp0 MTU to 1400. PPPoE has overhead
that the Ethernet MTU doesn't take into account.
Sean
On Wed, 10 Nov 1999, Jason Walton wrote:
> /* HINT: Search archives @ http://www.indyramp.com/masq/ before posting! */
>
>
> I have a small private network (consisting of my machine, my GF's machine,
> and a scavenged Cyrix 6x86 120 turned router). I've tried to setup the
> Linux box as a IP Masuerading machine, with some success, but I have some
> very very strange problems.
>
> From a Masq'd machine on the internal network, I can ping machines on the
> internet. I can telnet, and I can do other simple functions. I can play
> Quake III Test without any problems. I can't check email through POP3 or
> surf the web though. Web pages load either extremely slowly, or not at all
> (or bits of them load and then the network connection eventually times
> out). POP3 connections work fine up until a RETR command. I telneted into
> a POP3 port by hand and I could do whatever I wanted, but as soon as a
> tried a RETR, the connection stoped responding. I can browse through FTP
> directories, but if I actually try to FTP a file the connection just dies.
>
> The linux box is setup with Kernel 2.2.12 and PPPOE V0.31, connecting to
> an internal network on eth0 (192.168.0.0/24) and the internet on ppp0,
> which is a ppp connection over eth1 to an xDSL modem.
>
> Everything works fine if I'm actually running apps on the firewall
> machine, so I know my connection to the internet is good. Traffic flows
> properly from the linux box to my machine (I've FTP'd large files back and
> forth without any problems).
>
> According to ifconfig, no packets are being dropped, so everthing seems
> good there. I'm running a very very simple set of ipchains rules based on
> the sample rc.firewall script in the IPMasquerading HOWTO.
>
> My MTU and MRU are both set to 1500 for the PPP connection, and the
> ethernet connections are all at their defaults (which appear to be 1500
> from an ifconfig), so it isn't the "differing MTU and MRU cause packets
> with the 'do not fragment' bit set" bug.
>
> I'm not using IPAUTOFW.
>
> I'm at a complete loss. Anyone have any ideas?
>
> It may be related, but I doubt it. When I first fire up pppoed (PPP over
> ethernet daemon) I get a ">>> Discarding: NO PPP device waiting! <<<". I
> sometimes get a number of these errors after killing my PPP connection to.
> I can't figure out where they're comming from. They aren't from pppd or
> pppoed, since neither of them are running. GREPing through the entire hard
> drive (find / | xargs grep) for "NO PPP" and "device waiting" yielded 0
> matches.
>
> Special Agent Quartz - [EMAIL PROTECTED] \O_
> 8.7`/`7.88.7`/`7.88.7`/`7.88.7`/`7.88.7`/`7.88.7`/`7.88 |
> "Yeah, I'm your alter-ego, man." >\
> "Then I must be the ego-man, koo-koo-k'choo"
> -Yellow Submarine
>
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> PLEASE read the HOWTO and search the archives before posting.
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> Please keep general linux/unix/pc/internet questions off the list.
>
-------------------------------------------------------------------
Sean Walberg <[EMAIL PROTECTED]> http://www.escape.ca/~sean
"Last yeer I kudn't spel Engineer. Now I are won."
_______________________________________________
Masq maillist - [EMAIL PROTECTED]
Admin requests can be handled at http://www.indyramp.com/masq-list/ -- THIS INCLUDES
UNSUBSCRIBING!
or email to [EMAIL PROTECTED]
PLEASE read the HOWTO and search the archives before posting.
You can start your search at http://www.indyramp.com/masq/
Please keep general linux/unix/pc/internet questions off the list.
