October 2002 - WLUG - wlug.mailman3.com

XFree86 SMP Woes
by Marc Hughes 21 Oct '02

21 Oct '02

I just installed a second processor, installed an SMP kernel, and booted into it. At first, everything seemed great, I can do massive compiles, top shows both CPU's, and things go pretty zippy. BUT... I can't start X. This is what startx gives me: XFree86 Version 4.2.0 (Red Hat Linux release: 4.2.0-8) / X Window System (protocol Version 11, revision 0, vendor release 6600) Release Date: 23 January 2002 If the server is older than 6-12 months, or if your card is newer than the above date, look for a newer version before reporting problems. (See http://www.XFree86.Org/) Build Operating System: Linux 2.4.17-0.13smp i686 [ELF] Build Host: daffy.perf.redhat.com Module Loader present Markers: (--) probed, (**) from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. (==) Log file: "/var/log/XFree86.0.log", Time: Mon Oct 21 19:23:34 2002 (==) Using config file: "/etc/X11/XF86Config-4" (EE) RADEON(0): [agp] Could not bind XIO: fatal IO error 104 (Connection reset by peer) on X server ":0.0" after 0 requests (0 known processed) with 0 events remaining. I'm guessing the whole not being able to bind the AGP is the really bad part. I booted into the single CPU kernel, and X still works fine there. Any ideas? -Marc

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sendmail/RH8.0
by Bill Mills-Curran 21 Oct '02

21 Oct '02

After upgrading to RedHat 8.0, I'm being forced to learn more about sendmail that I have time to invest, so I need some help. Previously, I had used linuxconf to set up Linux server at work (EMC) that would forward most email to the domain mail server -- I'm not trying to manage mail for the company. One twist... I want to define a few aliases. My linuxconf setup worked great -- I could send email to aliasname(a)thismachine.emc.com, and the /etc/alias file would be used to translate "aliasname" to a list of addresses. With the new split sendmail config, I'm floundering. I've made a few tweaks that were necessary to allow the machine to act as an internal relay (I need some security help here, too), but I'm still fighting a mail loop problem. So, here are my specific questions/requirements: 1. I want to send to an alias on "thismachine.emc.com" from anywhere inside emc. 2. I want the same aliases to be used for email originating from "thismachine". 3. I don't want to create a relay security hole. I'll send my sendmail.mc and submit.mc files upon request. TIA, Bill

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linuxconf replacement?
by Bill Mills-Curran 21 Oct '02

21 Oct '02

I've just upgraded to 8.0, and I find that linuxconf is no longer distributed. I was growing fairly fond of it, and I'm wondering what is the latest and greatest system management tool. I've seen "setup", and it's a bit lacking. I like linuxconf because: 1. It doesn't require the detailed (geek-level) knowledge that editing config files requires. 2. It works without a gui, which is very convenient for su-ing to root, or working through slower connections. So, what's the "best" system management tool these days? TIA, Bill

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Re: [Wlug] t-shirts
by Peter Gutowski 21 Oct '02

21 Oct '02

>thought the following two would amuse you guys: > >(1) #define QUESTION ((bb) || !(bb)) > There's a lot of truth in that. ;) -- Peter Gutowski <peter(a)linuxchamps.com> // tel.: (413) 531-0123 "When in company, put not your hands to any part of the body not usually discovered." --George Washington, _Rules for Civility and Decent Behavior_

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t-shirts
by doug waud 21 Oct '02

21 Oct '02

Hi all I got a catalog from Computergear.com which offered a variety of T-shirts with various incriptions. I thought the following two would amuse you guys: (1) #define QUESTION ((bb) || !(bb)) and (2) The box said "Requires Windows 98 or better" So I installed Linux. doug

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Re: [Wlug] RH 7.0->7.3 upgrade
by Peter Gutowski 21 Oct '02

21 Oct '02

I'd suggest that you consider upgrading to 8.0. I've been very impressed with the changes in 8.0 primarily in the area of user interface. I've experienced problems with RHL upgrades in the past. But I believe the bulk of those problems owed to the fact that I was attempting to upgrade where the disk setup was just too "tight". Perhaps in contrast to to 7.0, both 7.3 and 8.0 put a lot of files into /usr/share. You'll may make things easier for yourself if /usr/share is on its own partition. Aside from the be prepared for a general tightening of security. If you use sendmail, you'll probably have to add a "sendmail: ALL" into /etc/hosts.allow as the default is to only do mail handling from localhost. RHL 8.0 uses apache 2.x whereas RHL7.3 still uses the 1.3.x versions. Having installations on hard disks with enough hard drive space has made both upgrades, 7.3 and 8.0, pretty painless. As Charles Anderson ;) may likely suggest to you, be sure to read (and digest) the README files on the install disks... probably before you start to alleviate too many surprizes. (Foolish boy that I was, I *didn't*. And to my embarassment, he [rightfully] rubbed my nose in it. But, hey, I learned my lesson.) FYI, this may not be totally meaningful without know how much and just what exactly in installed. But, that said, I'd characterize my installation as medium -- neither slim nor fat. Here's some pertinent partition usages: Filesystem 1K Blocks Used Available % Mounted on /dev/hda3 497861 80662 391495 18% / /dev/hda1 31079 6419 23056 22% /boot /dev/hda11 2063504 98612 1860072 6% /home /dev/hda7 2063504 1209760 748924 62% /usr /dev/hda9 521748 113052 382192 23% /usr/local /dev/hda8 2063504 729108 1229576 38% /usr/share /dev/hda10 521748 154348 340896 32% /usr/src /dev/hda5 497829 76114 396013 17% /var -PG On 10/18/2002 9:53 AM, Richard Goodman <dick(a)goodman1.net> wrote: >I have four RH servers, two 7.0 and two new 7.3 servers just put up >last 6 >weeks or less >How painless would an upgrade of the older servers from 7.0->7.3 >be? Any >surprises I should know about? Any comments or advice? I've never >done a >version upgrade before. > >I already have a CD with the most important security upgrades I used >on the >7.3 servers after I had worm (Slapper/Cinik) problems. > >Dick > > Richard Goodman dick(a)goodman1.net > > > > >_______________________________________________ >Wlug mailing list >Wlug(a)mail.wlug.org >http://mail.wlug.org/mailman/listinfo/wlug > >

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OS X Firewall? (#2)
by Richard Goodman 21 Oct '02

21 Oct '02

>I would run a packet sniffer (ethereal, tcpdump, etc) on the Linux box >and see what the iBook is putting out BTW the iBook is running 10.2 (brand new) Could not check the ipfw list as it appears that we don't currently have administrator privileges on the iBook. checking the preferences/sharing/firewall showed the firewall off, however I was concerned about the following entries from the iBook's /var/msg/system.log: IP packet filtering initialized, divert enabled, rule-based forwarding enabled, default to accept, logging disabled IP firewall loaded arplookup <IP of my linux box> failed: host is not on localnetwork I have never run a packet sniffer before, so cannot interpret it, but I fired up tcpdump and did a) ping yahoo.com b) attempt to load yahoo.com in IE5 and got the following two dumps (assume I've snipped enough) tcpdump host 192.168.1.49 Kernel filter, protocol ALL, datagram packet socket tcpdump: listening on all devices 15:55:16.232303 eth1 < host49.goodman1.net.49174 > bach.goodman1.net.domain: 49847+ A? yahoo.com. (2 7) 15:55:16.373034 eth1 > bach.goodman1.net.domain > host49.goodman1.net.49174: 49847* 2/5/5 A w1.rc.vi p.dcx.yahoo.com, A w1.rc.vip.scd.yahoo.com (229) 15:55:16.476477 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:17.476548 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:18.476633 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:19.476745 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:20.476828 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:21.476890 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:22.476949 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:23.477008 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request 15:55:24.477084 eth1 < host49.goodman1.net > w1.rc.vip.dcx.yahoo.com: icmp: echo request <<continued similarly many more lines> tcpdump host 192.168.1.49 Kernel filter, protocol ALL, datagram packet socket tcpdump: listening on all devices 16:01:00.340200 eth1 < host49.goodman1.net.49174 > bach.goodman1.net.domain: 45963+ A? www.yahoo.com . (31) 16:01:00.558192 eth1 > bach.goodman1.net.domain > host49.goodman1.net.49174: 45963 13/10/3 CNAME www .yahoo.akadns.net., A www9.dcx.yahoo.com, A w9.dcx.yahoo.com, (504) 16:01:00.563859 eth1 < host49.goodman1.net.49153 > www9.dcx.yahoo.com.www: S 1383754426:1383754426(0 ) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8687 0> (DF) 16:01:01.247337 eth1 < host49.goodman1.net.49153 > w9.dcx.yahoo.com.www: S 2642071908:2642071908(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8688 0> (DF) 16:01:01.962006 eth1 < host49.goodman1.net.49153 > w3.dcx.yahoo.com.www: S 3424625619:3424625619(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8689 0> (DF) 16:01:02.719348 eth1 < host49.goodman1.net.49153 > www10.dcx.yahoo.com.www: S 715459341:715459341(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8691 0> (DF) 16:01:03.433706 eth1 < host49.goodman1.net.49153 > w2.dcx.yahoo.com.www: S 3613744425:3613744425(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8692 0> (DF) 16:01:04.115338 eth1 < host49.goodman1.net.49153 > w6.dcx.yahoo.com.www: S 941366980:941366980(0) wi n 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8694 0> (DF) 16:01:04.796809 eth1 < host49.goodman1.net.49153 > w8.dcx.yahoo.com.www: S 1223626321:1223626321(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8695 0> (DF) 16:01:05.480085 eth1 < host49.goodman1.net.49153 > w1.dcx.yahoo.com.www: S 1755119059:1755119059(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8696 0> (DF) 16:01:05.550034 eth1 > arp who-has host49.goodman1.net tell localhost.localdomain (0:80:19:35:ad:39) 16:01:05.550329 eth1 < arp reply host49.goodman1.net is-at 0:3:93:c5:39:7c (0:80:19:35:ad:39) 16:01:06.163479 eth1 < host49.goodman1.net.49153 > www7.dcx.yahoo.com.www: S 2895506991:2895506991(0 ) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8698 0> (DF) 16:01:06.846666 eth1 < host49.goodman1.net.49153 > www8.dcx.yahoo.com.www: S 3434260281:3434260281(0 ) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8699 0> (DF) 16:01:07.529897 eth1 < host49.goodman1.net.49155 > www9.dcx.yahoo.com.www: S 2654995975:2654995975(0 ) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8701 0> (DF) 16:01:09.379617 eth1 < host49.goodman1.net.49155 > w9.dcx.yahoo.com.www: S 607986242:607986242(0) wi n 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8704 0> (DF) 16:01:11.231084 eth1 < host49.goodman1.net.49155 > w3.dcx.yahoo.com.www: S 1683897864:1683897864(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8708 0> (DF) 16:01:13.079138 eth1 < host49.goodman1.net.49155 > www10.dcx.yahoo.com.www: S 3195269927:3195269927( 0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8712 0> (DF) 16:01:14.929941 eth1 < host49.goodman1.net.49155 > w2.dcx.yahoo.com.www: S 1831211410:1831211410(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8715 0> (DF) 16:01:16.778674 eth1 < host49.goodman1.net.49155 > w6.dcx.yahoo.com.www: S 3961536773:3961536773(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8719 0> (DF) 16:01:18.628462 eth1 < host49.goodman1.net.49155 > w8.dcx.yahoo.com.www: S 4286238440:4286238440(0) win 32768 <mss 1460,nop,wscale 0,nop,nop,timestamp 8723 0> (DF) Does this provide enough information? Dick

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OS X firewall ?
by Richard Goodman 20 Oct '02

20 Oct '02

I put the question to the list because I think its related enough to be of interest. My wife just got a top-of-the-line iBook with OS X from school. Connects to the network at school instantly as it should. (I am brand new on OS X) At home I run an network based on a RH7.0 box with IpMasq and some servers going to a static-IP DSL line. About 10 machines, mixed Win and Mac, mixed static and DHCP. When she starts up the iBook: a) the DHCP server on the Linux box shows the normal DHCPREQUEST and DHCPACK lines. b) the Network panel on the iBook shows all the values I would expect to have been handed off by DHCP, 192.168.1.x IP, 255.255.255.0 mask, 192.168.1.1 gateway c) but unable to connect to the internet I found "Terminal" and was able to: d) ping the linux box e) do a nslookup against the name server on the linux box, resolving outside domain names f) bring up web pages running on the Apache server on the linux box But I don't seem to be able to get outside I thought the first thing to try would be to disable the IP Firewall that's being started on the iBook, but haven't been able to figure out how (or where its files are). BTW I run a fairly strict firewall on the linux box and the log shows no hits related to the iBook attempting to get outside. Or I could be totally off base, in which case I would be open to other avenues towards fixing this. Less related: There is an Apple Select 360 appletalk laserwriter on the network, connected thru an Asante appletalk/ethernet bridge which my wife has used with her G3. She can select it through the chooser on the iBook, and we can read and set printer config info, but although everything appears normal when printing for an application in OS9 classic, nothing gets to the printer (and no blinking green light indicating data transfer). Dick

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Re: [Wlug] RH 7.0->7.3 upgrade
by Peter Gutowski 18 Oct '02

18 Oct '02

On 10/18/2002 1:23 PM, Wes Allen <wallen(a)charter.net> wrote: >On Friday 18 October 2002 11:03, Peter Gutowski wrote: >> I'd suggest that you consider upgrading to 8.0. I've been very >>impressed with the........ ...snip... >Is the php module ready for 2.x? I've been thinking about giving >RH 8.0 a try >to see if I can make use of my usb ports! RHL8.0 includes PHP 4.2.2, plus various modules (libphp4.so for apache, imap, mysql, etc....) You might need to rework portions of the /etc/php.ini file, but it seems to be a straight shot. -PG

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RH 7.0->7.3 upgrade
by Richard Goodman 18 Oct '02

18 Oct '02

I have four RH servers, two 7.0 and two new 7.3 servers just put up last 6 weeks or less How painless would an upgrade of the older servers from 7.0->7.3 be? Any surprises I should know about? Any comments or advice? I've never done a version upgrade before. I already have a CD with the most important security upgrades I used on the 7.3 servers after I had worm (Slapper/Cinik) problems. Dick Richard Goodman dick(a)goodman1.net

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