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1. ²é¿´socket״̬
server1:~ # netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}'
TIME_WAIT 257
CLOSE_WAIT 117
FIN_WAIT2 2
ESTABLISHED 228
2. #vi /etc/sysctl.conf
3. Ôö¼Ó
   net.ipv4.tcp_keepalive_time = 120
   net.ipv4.tcp_keepalive_probes = 2
   net.ipv4.tcp_keepalive_intvl = 75
   net.ipv4.tcp_syncookies = 1
   net.ipv4.tcp_tw_reuse = 1
   net.ipv4.tcp_tw_recycle = 1
   net.ipv4.tcp_fin_timeout = 30
   net.ipv4.ip_local_port_range = 1024 65000
4. ±£´æ£¬Ö´ÐÐ#sysctl –pÉúЧ


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#!/bin/sh
/sbin/modprobe ip_conntrack_ftp
CONNECTION_TRACKING="1"
ACCEPT_AUTH="0"
DHCP_CLIENT="0"
IPT="/sbin/iptables" # Location of iptables on your system
INTERNET="eth0" # Internet-connected interface
LO ......
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