Re: which Distro does your company use ?
1) we use RHEL 2) here http://www.internetnews.com/dev-news/article.php/3313211 you can see Netcraft's report analyze for webservers. Vitaly Karasik, RHCE *** Information contained in this email message is intended only for use of the individual or entity named above. If the reader of this message is not the intended recipient, or the employee or agent responsible to deliver it to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please immediately notify the [EMAIL PROTECTED] and destroy the original message. *** To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
when a linux station has 2 net interfaces
The addresses used below are fictictious. But we really have a class B address that is subnetted into class C subnets. My station's main IP is 130.130.1.66 (subnet 1). That interface is always up. Sometimes, I bring up the 2nd interface at 130.130.2.66 (subnet 2). I also create routing table entries so packets to some subnets go via the subnet 2 interface. I suspect that when that happens, sometimes the packet goes out the subnet 2 interface, but the source address in the IP packet is the subnet 1 address. Any suggestions for how to check that? Someone suggested to me tcpdump. Is there a better and/or easier way? More importantly, if I'm correct, how do I change it? I running Distribution: Red Hat Enterprise Linux WS release 3 (Taroon Update 2) Linux Kernel: 2.4.21-15.EL #1 Thanks, ~~ Haim (Howard) Roman | Computer Center [EMAIL PROTECTED] | Jerusalem College of Technology, ISRAEL = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: when a linux station has 2 net interfaces
On Thu, Sep 09, 2004 at 09:55:40AM +0300, haim [howard] roman wrote: > The addresses used below are fictictious. But we really have a class > B address that is subnetted into class C subnets. > > My station's main IP is 130.130.1.66 (subnet 1). That interface is always up. > > Sometimes, I bring up the 2nd interface at 130.130.2.66 (subnet 2). I > also create routing table entries so packets to some subnets go via > the subnet 2 interface. > > I suspect that when that happens, sometimes the packet goes out the > subnet 2 interface, but the source address in the IP packet is the > subnet 1 address. > > Any suggestions for how to check that? Someone suggested to me > tcpdump. Is there a better and/or easier way? I do not know, but tcpdump is quite easy. You can use ethereal, which is graphical and maybe more comfortable. > > More importantly, if I'm correct, how do I change it? I running > > Distribution: Red Hat Enterprise Linux WS release 3 > (Taroon Update 2) > > Linux Kernel: 2.4.21-15.EL #1 You need to change this per application, as far as I know. E.g. the option '-b' in openssh. -- Didi = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: Quickcam 4000 pro
Cyril Scetbon wrote: Hi all, I would like to get feedback about using this webcam under linux. Which soft was used ? Have you succeeded in communicating with windows users? (gnomemeeting, others ?) In using the integrated micro (feedback from others webcam are welcomed) ? Thanks. = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] The camera itself is great - good quality video, integrated mic (which is quite sensitive). Under Linux - not so great. It has been theoretically supported* but to get decent quality (e.g. more than 5 FPS) you need to recompile your kernel and add decompressor support for it. I tried this on Debian and gave up eventually, so I just use it on Windows. Re-compiling is more than I'm willing to do just for a webcam. So in short - excellent camera, I'd buy it even if it worked only on Windows, but don't reformat that Windows partition quite yet. Cheers, Gad * There has been an issue lately with some support for Philips chipsets being dropped, it was discussed here recently. -- http://chookies.homeunix.org = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
RE: Quickcam 4000 pro
Hello, I had tried the logitech 4000 pro on Linux with the pwc and pwcx driver. You get good results for a CIF image (352x288). The quality is much higher comparing to logitech quickcam. I did not tried it against NetMeeting. The SW I tried was mainly gnomemeeting. Regarding the Audio : I had tried the built in microphone in this camera. When you use a headset - the quality is reasonable. When you try to use spekaers on both sides - there is an echo which becomes stronger during time (until it is simply unbearable shrike). (BTW, this is a known phenomenon which happened to me also in NetMeeting but it seems to me that on Skype the problem is really reduced; If I am not wrong they use sw echo chacellation mechanisms of IPGlobal (which is commercial) and as I know there is no OpenSource VideoConference projects with Echo Chancellation ; I had looked in GnomeMeeting newsgroup and I saw that this probelm is with no real solution (except the advice to lower the speakers, which not really helps). And BTW, probably the sensor is very sensitive - (It is a SONY sensor l at least that is waht you can see in the kernel log) - the quality of this WebCam in almost total darkness in unbelievable. I tried it on 2.4 mhz and also on 700 Mhz Intel machines and it seems enough horsepower for the codecs. I also tried it with opensource ophone 1.4.1 http://www.openh323.org/code.html but the results are not as good as gnomemeeting. Hope this helps, Rami Rosen From: Cyril Scetbon <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] Subject: Quickcam 4000 pro Date: Thu, 09 Sep 2004 08:19:57 +0200 Hi all, I would like to get feedback about using this webcam under linux. Which soft was used ? Have you succeeded in communicating with windows users? (gnomemeeting, others ?) In using the integrated micro (feedback from others webcam are welcomed) ? Thanks. = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED] _ Add photos to your e-mail with MSN 8. Get 2 months FREE*. http://join.msn.com/?page=features/featuredemail = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: ADSL QoS shaper
On Wed, Sep 08, 2004 at 10:17:40PM +0200, Tzahi Fadida wrote: > sometimes its not enough to use only TOS and traffic shapers are better. Using TOS isn't enough. In order for TOS-based priorities to take actual effect, you also need to cap your upstream to prevent packet queueing at the ISP side. This is what I've done with the 'tc' command. > however, you can set TOS flags to certain ports using iptables. Right, but it's mostly unnecessary. Before you set TOS on a certain port, use a traffic analyzer (like Ethereal): You might find out those packets already have a proper TOS. > btw, I am not sure you need also OUTPUT, I think PREROUTING is enough. > also you must understand you only control with TOS the outgoing packets. > if I understand correctly TOS works by grouping packets in 5 queues of Linux uses a 3-queue algorithm -- called the 'pfifo_fast' queueing discipline. You can read more about it in the Linux Advanced Routing and Traffic Control (LARTC) HOWTO. > $iptdir -A PREROUTING -t mangle -p tcp --dport 21 -j TOS --set-tos > Minimize-Delay That's unnecessary. Your FTP client sets the TOS on its sockets already. > $iptdir -A PREROUTING -t mangle -p tcp --dport 22 -j TOS --set-tos > Minimize-Delay Ditto for 'ssh'. > $iptdir -A PREROUTING -t mangle -p tcp --dport 23 -j TOS --set-tos > Minimize-Delay And 'telnet' too. > $iptdir -A PREROUTING -t mangle -p tcp --dport 80 -j TOS --set-tos > Minimize-Delay That's not entirely smart. This will make HTTP uploads be on the same priority as pings and Quake games; and Quake games sure need to be more responsive than mail you send thru your webmail... > $iptdir -A PREROUTING -t mangle -p tcp --dport 25 -j TOS --set-tos > Minimize-Delay That's entirely wrong. Is sending mail an "interactive" task? Nope, and it surely doesn't deserve to halt your Quake game, or your streaming video show. = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Problems with WRT54G router
Hi I have a Linksys WRT54G router. I use it with wireless disabled, only for routering to an ADSL connection. A couple of days ago a wierd problem started. The connection between the router and the local computers became slow and when I pinged the router, it only returned some of the pings. I had batbox distribution for WRT54G installed, so I telneted it, and when I pinged my local computers from the router, it said something like: Operation not permitted When I turned down the NIC that connects to the ADSL modem (eth1) the problem stopped, but this makes the router useless. After a reset the problem also went away, but today it happened again. Does anyone know what this could be? PS: I have the latest firmware (2.04.4). -- Haggai Eran [EMAIL PROTECTED] = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
RE: ADSL QoS shaper
> -Original Message- > From: Ilya Konstantinov [mailto:[EMAIL PROTECTED] On Behalf > Of Ilya Konstantinov > Sent: Thursday, September 09, 2004 6:44 PM > To: Tzahi Fadida > Cc: 'Ilya Konstantinov'; 'Skliarouk Arieh'; [EMAIL PROTECTED] > Subject: Re: ADSL QoS shaper > > > On Wed, Sep 08, 2004 at 10:17:40PM +0200, Tzahi Fadida wrote: > > sometimes its not enough to use only TOS and traffic shapers are > > better. > > Using TOS isn't enough. In order for TOS-based priorities to > take actual effect, you also need to cap your upstream to > prevent packet queueing at the ISP side. This is what I've > done with the 'tc' command. > as I said, shapers are better. kudos on the initiative. I'll have to recompile my old kernel though so its not for me at this time. > > however, you can set TOS flags to certain ports using iptables. > > Right, but it's mostly unnecessary. Before you set TOS on a > certain port, use a traffic analyzer (like Ethereal): You > might find out those packets already have a proper TOS. > > > btw, I am not sure you need also OUTPUT, I think PREROUTING > is enough. > > also you must understand you only control with TOS the outgoing > > packets. if I understand correctly TOS works by grouping > packets in 5 > > queues of > > Linux uses a 3-queue algorithm -- called the 'pfifo_fast' > queueing discipline. You can read more about it in the Linux > Advanced Routing and Traffic Control (LARTC) HOWTO. good to know. gives you more perspective on whats going on in there. > > > $iptdir -A PREROUTING -t mangle -p tcp --dport 21 -j TOS --set-tos > > Minimize-Delay > > That's unnecessary. Your FTP client sets the TOS on its > sockets already. probably, to lazy to check. besides, it's a personal preference of what's important to me. > > > $iptdir -A PREROUTING -t mangle -p tcp --dport 22 -j TOS --set-tos > > Minimize-Delay > > Ditto for 'ssh'. > > > $iptdir -A PREROUTING -t mangle -p tcp --dport 23 -j TOS --set-tos > > Minimize-Delay > > And 'telnet' too. > > > $iptdir -A PREROUTING -t mangle -p tcp --dport 80 -j TOS --set-tos > > Minimize-Delay > > That's not entirely smart. This will make HTTP uploads be on > the same priority as pings and Quake games; and Quake games > sure need to be more responsive than mail you send thru your > webmail... don't play games. I think it's my subjective view of my use. other people may have other preferences. > > > $iptdir -A PREROUTING -t mangle -p tcp --dport 25 -j TOS --set-tos > > Minimize-Delay > > That's entirely wrong. Is sending mail an "interactive" task? > Nope, and it surely doesn't deserve to halt your Quake game, > or your streaming video show. again, personal preferences. others may have other preferences. in fact, I'd prefer my mail to get thru as fast as possible since its more important to me then any advertisement on ynet etc... > > = > To unsubscribe, send mail to [EMAIL PROTECTED] > with the word "unsubscribe" in the message body, e.g., run > the command echo unsubscribe | mail [EMAIL PROTECTED] > > > = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: Quickcam 4000 pro
rami rosen wrote: Hello, I had tried the logitech 4000 pro on Linux with the pwc and pwcx driver. You get good results for a CIF image (352x288). The quality is much higher comparing to logitech quickcam. I did not tried it against NetMeeting. The SW I tried was mainly gnomemeeting. Regarding the Audio : I had tried the built in microphone in this camera. When you use a headset - the quality is reasonable. When you try to use spekaers on both sides - there is an echo which becomes stronger during time (until it is simply unbearable shrike). yeah, I noticed it :-( that's why I don't use the webcam speaker Is it necessary to use skype for the sound combinate with gnomemeeting for the video or gnomemeeting manages both well ? (BTW, this is a known phenomenon which happened to me also in NetMeeting but it seems to me that on Skype the problem is really reduced; If I am not wrong they use sw echo chacellation mechanisms of IPGlobal (which is commercial) and as I know there is no OpenSource VideoConference projects with Echo Chancellation ; I had looked in GnomeMeeting newsgroup and I saw that this probelm is with no real solution (except the advice to lower the speakers, which not really helps). And BTW, probably the sensor is very sensitive - (It is a SONY sensor l at least that is waht you can see in the kernel log) - the quality of this WebCam in almost total darkness in unbelievable. I tried it on 2.4 mhz and also on 700 Mhz Intel machines and it seems enough horsepower for the codecs. I also tried it with opensource ophone 1.4.1 http://www.openh323.org/code.html but the results are not as good as gnomemeeting. Hope this helps, Rami Rosen = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
Re: ADSL QoS shaper
Tzahi Fadida wrote: $iptdir -A PREROUTING -t mangle -p tcp --dport 80 -j TOS --set-tos Minimize-Delay That's not entirely smart. This will make HTTP uploads be on the same priority as pings and Quake games; and Quake games sure need to be more responsive than mail you send thru your webmail... don't play games. I think it's my subjective view of my use. other people may have other preferences. You're missing something here. When you set "minimize delay", you are implicitly allowing the queuing to prefer low latency over high bandwidth. If your web sites or emails are high volume, are you sure you want them sent out slower? Also take into account that the overall performance of your line are a given. There is not much you can do about it. If you give EVERYONE a boost, you will see no noticeable change at the end of the day. Shachar -- Shachar Shemesh Lingnu Open Source Consulting ltd. http://www.lingnu.com/ = To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
