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rsh problems in CentOS 5.2 (was "cvs command failure on 5.2")
by MHR 10 Jul '08

10 Jul '08

Okay, I've narrowed the problem down quite a bit. As previously reported, in CentOS 5.2 I get this: $ cvs log Makefile poll: protocol failure in circuit setup cvs [log aborted]: end of file from server (consult above messages if any) Turns out this is a problem with rsh: $ rsh khan ls connect to address 10.24.15.48 port 544: Connection refused Trying krb4 rsh... connect to address 10.24.15.48 port 544: Connection refused trying normal rsh (/usr/bin/rsh) poll: protocol failure in circuit setup Now, if I just reomtely login to khan (our cvs server), I get this: [mrichter@sushi ~]$ khan connect to address 10.24.15.48 port 543: Connection refused Trying krb4 rlogin... connect to address 10.24.15.48 port 543: Connection refused trying normal rlogin (/usr/bin/rlogin) Last login: Fri Jul 4 18:19:01 from viper [mrichter@khan mrichter]$ Voila - I'm logged in. Also, if I try an rsh from another machine (viper - FC1), I get this: [mrichter@viper mrichter]$ rsh khan ls connect to address 10.24.15.48: Connection refused Trying krb4 rsh... connect to address 10.24.15.48: Connection refused trying normal rsh (/usr/bin/rsh) Desktop Documents Download Music Pictures Public Templates Videos bin lane608 rls_607 temp.xml So, what is it about rsh from CentOS 5.2 such that the kerberos certification destroys its chances of success? Alternative question: what do I need to tweak to make this work? Thanks. mhr PS: Google has lots of wrong answers on this, mostly really old and of no use at all.

8 21

Need help with awk one-liner
by Sean Carolan 10 Jul '08

10 Jul '08

This awk command pulls URLs from an apache config file, where $x is the config filename. awk '/:8008\/root/ {printf $3 "\t"}' $x The URL that is output by the script looks something like this: ajpv12://hostname.network.company.com:8008/root Is there a way to alter the output so it only shows "hostname" by itself? Do I need to pipe this through awk again to clean it up?

4 8

IPv6 static routing
by Robert Moskowitz 10 Jul '08

10 Jul '08

So I do not want to run radvd on my public subnet (between the gateway and firewall). I am trying to set up the firewall's public interface. For now in ifcfg-eth0 I have the lines: DEVICE=eth0 BOOTPROTO=static HWADDR=00:40:F4:05:A8:F1 IPV6INIT=yes IPV6_AUTOCONF=no IPV6ADDR="2607:F4B8:3:1:0:40:F405:A8F1" ONBOOT=yes And in network I have: NETWORKING=yes NETWORKING_IPV6=yes IPV6FORWARDING=yes IPV6_DEFAULTGW="2607:F4B8:3:1:50:BA42:8249%eth0" But when I restart network (service network restart) I get: Bringing up interface eth0: WARN : [ipv6_add_route] Unknown error [ OK ] and ip -6 route show dev eth0 generates: 2607:f4b8:3:1::/64 metric 256 expires 21333899sec mtu 1500 advmss 1440 hoplimit 4294967295 fe80::/64 metric 256 expires 21333899sec mtu 1500 advmss 1440 hoplimit 4294967295 What is missing? I am using http://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/ for some help.

1 0

How can I automate random bytes generation for CENTOS 5.2?
by Tolun ARDAHANLI 10 Jul '08

10 Jul '08

Hi; I want to automatize random bytes generation for gpg. Cause it takes too much time for creating a key. What should I do? I have Centos5.2+Atmail e-mail server. Thanks a lot... -- Tolun ARDAHANLI Bilgisayar Muhendisi E-posta:tolun.ardahanli@linux.org.tr<E-posta%3Atolun.ardahanli(a)linux.org.tr> Icq:326600 ---------------------------------------------------------------------------- Tolun ARDAHANLI Computer Engineer E-mail:tolun.ardahanli@linux.org.tr <E-mail%3Atolun.ardahanli(a)linux.org.tr> Icq:326600

3 6

CentOS Patch for http://www.kb.cert.org/vuls/id/800113
by Sean Carolan 10 Jul '08

10 Jul '08

Will there be a BIND patch available for this vulnerability, for CentOS 3.9? http://www.kb.cert.org/vuls/id/800113

5 6

can I use CentOS as a antivirus / spam filter / HTTP AV gateway?
by Rudi Ahlers 10 Jul '08

10 Jul '08

Hi all I've been thinking about using CentOS on a Dell R200 server and turn it into a firewall / network monitor / traffic shaper in our datacentre, instead of using a dedicated firewall device. One of the devices that I have been looking at, with my limited budget, is the D-Link DFL 860 - http://www.netdefend.eu/Product.aspx?m=15&ref=DFL-860 It provides AV, SPI, VPN, DOS, P2P, etc protection. Most of this can be done with Linux as well, but I'm not 100% sure about the AV part. How will I use / setup CentOS to check all traffic coming in & out (HTTP, SMTP, POP3, IMAP, etc) for virusses and clean them? We host both Windows & Linux servers, and I'm not too worried about the Linux servers, but Windows needs a lot of extra protection. -- Kind Regards Rudi Ahlers CEO, SoftDux Web: http://www.SoftDux.com Check out my technical blog, http://blog.softdux.com for Linux or other technical stuff, or visit http://www.WebHostingTalk.co.za for Web Hosting stuff

5 6

1st static IPv6 address
by Robert Moskowitz 10 Jul '08

10 Jul '08

My ISP assigned prefix is: 2607:F4B8:3::/48 So I am building my internal IPv6 firewall/router/ etc. I want to have a static IPv6 address on its eth0 so that I can create static v6 routes to it from the gateway. I add the following lines to ifcfg-eth0: HWADDR=00:40:F4:05:A8:F1 IPV6INIT=yes IPV6_AUTOCONF=no IPV6ADDR="2607:F4B8:3:1" if-up eth0 gets the error: Error: an inet prefix is expected rather than "2607:F4B8:3:1/64". ERROR : [ipv6_add_addr_on_device] Cannot add IPv6 address '2607:F4B8:3:1/64' on dev 'eth0' What is missing? Why is it not building an address of 2607:F4B8:3:1:0:40:F405:A8F1 ? I am reading: file:///usr/share/doc/initscripts-8.45.19.EL/sysconfig.txt for my 'inspiration'. Other sources are welcome... OH, /etc/sysconfig/network does have the line: NETWORKING_IPV6=yes

1 0

what does "not found" mean in a DHCPRELEASE context?
by David Mackintosh 10 Jul '08

10 Jul '08

I have a CentOS 4.6 server running dhcpd. One of my client devices (a Panasonic KX-HCM280A camera) is trying to get a lease from that server. I can see the device accept a lease (it is a reservation), however it always releases the reservation after about 25 seconds: Jul 10 10:30:49 stargate dhcpd: DHCPDISCOVER from 00:80:f0:56:46:30 via eth0 Jul 10 10:30:49 stargate dhcpd: DHCPOFFER on 172.31.14.13 to 00:80:f0:56:46:30 via eth0 Jul 10 10:30:49 stargate dhcpd: DHCPREQUEST for 172.31.14.13 (172.31.0.1) from 00:80:f0:56:46:30 via eth0 Jul 10 10:30:49 stargate dhcpd: DHCPACK on 172.31.14.13 to 00:80:f0:56:46:30 via eth0 Jul 10 10:31:16 stargate dhcpd: DHCPRELEASE of 172.31.14.13 from 00:80:f0:56:46:30 via eth0 (not found) If I remove the reservation and reset the camera, it does the same thing with a dynamic lease; however in that case the message is Jul 3 09:48:05 stargate dhcpd: DHCPDISCOVER from 00:80:f0:56:46:30 via eth0 Jul 3 09:48:06 stargate dhcpd: DHCPOFFER on 172.31.9.91 to 00:80:f0:56:46:30 via eth0 Jul 3 09:48:06 stargate dhcpd: DHCPREQUEST for 172.31.9.91 (172.31.0.1) from 00:80:f0:56:46:30 via eth0 Jul 3 09:48:06 stargate dhcpd: DHCPACK on 172.31.9.91 to 00:80:f0:56:46:30 via eth0 Jul 3 09:48:19 stargate dhcpd: DHCPRELEASE of 172.31.9.91 from 00:80:f0:56:46:30 via eth0 (found) ...ie "(found)" instead of "(not found)". I should mention that I have several other cameras of the same type which are working, so this is most assuredly a problem with the camera itself, but I was still wondering: Does anyone know what dhcpd (or the device) is trying to tell me with this message? -- /\oo/\ / /()\ \ David Mackintosh | dave(a)xdroop.com | http://www.xdroop.com

2 1

UTF-8 support in PCRE
by Amitava Shee 10 Jul '08

10 Jul '08

How do I get utf-8 support with PCRE? I am having problems building lucene index using Zend_Lucene. I get the following error PHP Notice: iconv(): Detected an illegal character in input string in /var/www/ZendFramework-1.5.2/library/Zend/Search/Lucene/Analysis/Analyzer/Common/Text.php on line 56 Thanks in advance. Regards, Amitava Shee

8 18

Slow HVM IO performance with newer kernels
by henry ritzlmayr 10 Jul '08

10 Jul '08

Hi list. I am testing CentOS 5.2 now. I experience much slower IO under HVM Guests with the newer kernels, so I started some measurements. DOM-0 is a fully upgraded CentOS 5.2. DOM-U is CentOS 5.0 not upgraded at all for testing purposes. DOM-U sits on an LVM Volume. No other services are running. Hardware was freshly rebooted every time. within DOM-0 dd if=/dev/vgpentanol/lvol2 of=/dev/null bs=1M count=1000 gives 134 MB/s so thats the bare metal value. within DOM-U dd if=/dev/hda of=dev/null bs=1M count 1000 gives 50 MB/s with DOM-0 kernel 2.6.18-53.1.19.el5xen 10 MB/s with DOM-0 kernel 2.6.18-92.1.1.el5xen 10 MB/s with DOM-0 kernel 2.6.18-92.1.6.el5xen so there has been a drop to 20% of the performance within 2.6.18-53. Any Ideas? The machine is a test system - so I am open to any changes in configuration you might suggest. As a side note: A PV Guest gets 85 MB/s no matter which kernel. Henry

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