centos4.4 升级内核打netfilter补丁

1、下载
linux-2.6.15.6.tar.bz2
patch-2.6.15.6.bz2
iptables-1.3.6.tar.bz2
patch-o-matic-ng-20061024.tar.bz2
2、解压缩
cd /usr/src
tar -jxf linux-2.6.15.6.tar.bz2
tar -jxf iptables-1.3.6.tar.bz2
tar -jxf patch-o-matic-ng-20061024.tar.bz2

3、内核先打补丁
cd /usr/src/linux-2.6.15.6
bunzip2 -dv /usr/src/patch-2.6.15.6.bz2 | patch -p0
vi /usr/src/linux-2.6.15.6/include/linux/posix_types.h
#define __FD_SETSIZE 65536
vi /usr/src/linux-2.6.15.6/include/linux/fs.h
#define INR_OPEN 65536
#define NR_FILE 65536
vi /usr/src/linux-2.6.15.6/include/net/tcp.h
#define TCP_TIMEWAIT_LEN （1*HZ）
#define TCP_SYNACK_RETRIES 3