Wednesday, November 16, 2011

ip_conntrack problem: error: "net.ipv4.ip_conntrack_max" is an unknown key

To fix this issue do the following:

1. modprobe ip_conntrack
2. lsmod |grep conn -- if you see entries it means modules have been loaded correctly
3. sysctl -w -- to write the changes you made under /etc/sysctl.conf
4. sysctl -p -- to view the changes and see if it was actually loaded.
Posted by RAVTSOFT CORP. at 2:18 AM

4 comments:

  1. AnonymousMarch 2, 2012 at 3:56 AM

    Hi,
    I tried this on Centos 6.2, this is my out:

    [root@osk006 etc]# modprobe ip_conntrack
    [root@osk006 etc]# lsmod | grep conn
    nf_conntrack_ipv4 9506 0
    nf_conntrack 79453 1 nf_conntrack_ipv4
    nf_defrag_ipv4 1483 1 nf_conntrack_ipv4
    [root@osk006 etc]# sysctl -w
    [root@osk006 etc]# sysctl -p
    error: "net.ipv4.netfilter.ip_conntrack_max" is an unknown key


    any idea or suggestion?

    thanks in advance,

    Daniele

    ReplyDelete
    Replies
    1. RAVTSOFT CORP.August 15, 2012 at 1:11 AM

      Hi,

      To fix this issue, you will have to restart your firewall. Cheers!!!

      Delete
  2. RAVTSOFT CORP.July 24, 2012 at 8:29 AM

    Hi,

    To fix this issue, you will have to restart your firewall. Cheers!!!

    ReplyDelete
  3. prasadJuly 9, 2013 at 9:39 PM

    Hi,

    i have below error in my redhat linux server pls help

    bash-3.2# dmesg | more
    ssh-scan[8665]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8677]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8670]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8680]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8672]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8675]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8676]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8684]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8678]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8681]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8682]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8687]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8683]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8685]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8686]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8691]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8690]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8688]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8694]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8697]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8696]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8689]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8698]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8693]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8695]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4
    ssh-scan[8706]: segfault at 0000000000000000 rip 0000000008048e33 rsp 00000000fff70d20 error 4

    belwo is my redhat server details

    bash-3.2# uname -i
    x86_64

    bash-3.2# uname –a
    Linux mum-svr-asin-01 2.6.18-308.13.1.el5 #1 SMP Thu Jul 26 05:45:09 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux

    bash-3.2# cat /etc/issue
    Red Hat Enterprise Linux Server release 5.8 (Tikanga)
    Kernel \r on an \m

    pls help me

    reply me on
    prasadthorbole26@gmail.com

    regards,
    prasad

    ReplyDelete

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