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Asked: 2016-04-14 00:55:56 +0800 CST

sysctl: cannot stat /proc/sys/net/ipv4/netfilter/ip_conntrack_max: No such file or directory

  • 772

I try to change net.ipv4.netfilter.ip_conntrack_max by editing /etc/sysctl.conf

net.ipv4.netfilter.ip_conntrack_max = 65535

and sysctl -p

But i receive error:

sysctl: cannot stat /proc/sys/net/ipv4/netfilter/ip_conntrack_max: No such file or directory

CentOS 7

networking centos7 sysctl

2 Answers

  1. Try

    net.netfilter.nf_conntrack_max = xxxx

    and

    net.nf_conntrack_max = xxxxx

    instead.

    Or maybe ip_conntrack is not loaded. Try:

    lsmod |grep conntrack

    If this is empty, load it with:

    modprobe ip_conntrack
    • 15

  2. Try the setting net.nf_conntrack_max instead:

    # sysctl net.nf_conntrack_max
net.nf_conntrack_max = 262144

    Also net.netfilter.nf_conntrack_max:

    # sysctl net.netfilter.nf_conntrack_max
net.netfilter.nf_conntrack_max = 262144

    (There are various aliases for the same internal value).

    • 1