server:~# cat /proc/sys/net/ipv4/netfilter/ip_conntrack_max 12288 This is on a machine with 192M RAM, the default of that sysctl value is proportionalwith the amount of RAM, but it can be changed, afaik every ip_conntrack entry (/proc/net/ip_conntrack) needs arround 300bytes from RAM. On Wed, 15 Sep 2004 22:31:24 +0600 (LKT), mohan@xxxxxxxxxxxx <mohan@xxxxxxxxxxxx> wrote: > Hi > Please advice, I am running a iptables 1.2.11 on Debian Woody with 2.4.24 > kernel. I have a DMZ with 7 machines (4 linux, 3 windows) and 80 Windows > machines on the LAN side. > > The windows machines makes a lot of tcp/ip connections with internal > client machines (oracle and java). As certain time (around 4000 > simultaneous TCP/IP connections) the machine running iptables drops > connections and failures occur. > > Are there any kernel or iptables setting required to be set for such a > large number of connections??? > Please advice > > Thanks > Mohan > > -- Bla bla
