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pmatos
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Joined: 06 Jun 2003
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Location: Eckental, Germany
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 Posted: Thu Feb 19, 2004 4:14 pm Post subject: Kernel seems to be blocking messages |
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Hi all,
I have a server running 2.6.2-rc1-gentoo, and I was happily installing vpopmail and reading the vpopmail gentoo guide. Somehow (don't ask me why) every net connections seem to stop and get blocked. Now I cannot make any socket connection. For example:
| Quote: | $ ping localhost
PING descartes.geniousdomain (127.0.0.1) 56(84) bytes of data.
ping: sendmsg: Operation not permitted
... |
Any ideas on how to unblock the situation?
Cheers,
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Paulo Matos |
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l0st3d
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Joined: 03 Nov 2002
Posts: 42
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| Posted: Thu Feb 19, 2004 5:56 pm Post subject: |
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ping is setuid root
ed@cobain perl $ ls -l `which ping`
-rwsr-xr-x 1 root root 32560 Oct 30 07:00 /bin/ping
have you tried running ping as root ??? as root try
# chmod 4755 `which ping`
that might fix it |
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pmatos
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Joined: 06 Jun 2003
Posts: 1246
Location: Eckental, Germany
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| Posted: Thu Feb 19, 2004 7:31 pm Post subject: |
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| l0st3d wrote: | ping is setuid root
ed@cobain perl $ ls -l `which ping`
-rwsr-xr-x 1 root root 32560 Oct 30 07:00 /bin/ping
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Same here!
| l0st3d wrote: |
have you tried running ping as root ??? as root try
# chmod 4755 `which ping`
that might fix it |
I was running it as root, so I get the same thing.... Any ideas? The situation is that not only ping is being blocked but all socket connections...
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pmatos
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Location: Eckental, Germany
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| Posted: Thu Feb 26, 2004 10:20 am Post subject: |
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Got it, problem solved. IPTables problem... 
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bin-doph
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Joined: 23 May 2003
Posts: 302
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| Posted: Mon Nov 01, 2004 10:41 am Post subject: |
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hi,
why aren't you a bit more specific in the solution of your problem?
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perl -e '$_=q;4a75737420616e6f74686572205065726c204861636b65720as;;for(s;s;s;s;s;s;s;s;s;s;s;s){s;(..)s?;qq qprint chr 0x$1 and \161 ssq;excess;}' |
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pmatos
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Joined: 06 Jun 2003
Posts: 1246
Location: Eckental, Germany
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| Posted: Tue Nov 02, 2004 3:20 pm Post subject: |
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| bin-doph wrote: | hi,
why aren't you a bit more specific in the solution of your problem? |
My iptables config was incorrect. I advise you to forget iptables and use shorewall.
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Thrain
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Joined: 01 Sep 2003
Posts: 380
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| Posted: Mon Jan 10, 2005 1:22 pm Post subject: |
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Same problem on my Linux box.
I never used iptables - And I don't actually use it.
I can't ping localhost, nor my eth address, nor the router address, nor anything else.
EDIT: And I can't ping my Linux box from here (Winxp pc):
The packets don't came.
Help please!
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Thrain
"...only astonishment knows..." |
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pmatos
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Joined: 06 Jun 2003
Posts: 1246
Location: Eckental, Germany
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| Posted: Mon Jan 10, 2005 5:52 pm Post subject: |
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| Thrain wrote: | Same problem on my Linux box.
I never used iptables - And I don't actually use it.
I can't ping localhost, nor my eth address, nor the router address, nor anything else.
EDIT: And I can't ping my Linux box from here (Winxp pc):
The packets don't came.
Help please! |
Can you post /etc/hosts, ping replies, ifconfig reply?
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Thrain
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Joined: 01 Sep 2003
Posts: 380
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| Posted: Mon Jan 10, 2005 8:18 pm Post subject: |
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| pmatos wrote: |
Can you post /etc/hosts, ping replies, ifconfig reply? |
| Code: |
/etc/hosts:
127.0.0.1 localhost
127.0.0.1 Arda.valinor.it Arda
10.0.0.12 Arda.valinor.it Arda
10.0.0.9 Angmar.valinor.it Angmar
# IPV6 versions of localhost and co
::1 ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters
ff02::3 ip6-allhosts
ping output:
# ping localhost
PING localhost (127.0.0.1) 56(84) bytes of data.
ping: sendmsg: Operation not permitted.
ping: sendmsg: Operation not permitted.
ping: sendmsg: Operation not permitted.
ping: sendmsg: Operation not permitted.
ifconfig reply:
# ifconfig
eth0 Link encap:Ethernet HWaddr 00:10:DC:D9:EF:3B
inet addr:10.0.0.12 Bcast:255.255.255.255 Mask:255.255.255.0
UP BROADCAST NOTRAILERS RUNNING MULTICAST MTU:1500 Metric:1
RX packets:696053 errors:0 dropped:0 overruns:0 frame:0
TX packets:933632 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:151567461 (144.5 Mb) TX bytes:151046681 (144.0 Mb)
Interrupt:11 Base address:0x2e00
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:1260494 errors:0 dropped:0 overruns:0 frame:0
TX packets:1260494 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:281899222 (268.8 Mb) TX bytes:281899222 (268.8 Mb)
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With a reboot all returned to work fine. But I don't want that this will happen again...
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Thrain
"...only astonishment knows..." |
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Networking & Security
