一、版本

内核当前版本

# uname -r

2.6.18-164.el5

ipsec-tools版本

# rpm -qa|grep ipsec-tools

ipsec-tools-0.6.5-13.el5_3.1

由于系统自带的ipsec-tools版本较低,且无源码,这里从http://ipsec-

tools.sourceforge.net/下载当前最新版本0.7.2

#tar ipsec-tools-0.7.2.tar.gz

#cd ipsec-tools

二、安装过程中出现的问题总结

1. checking openssl version... too old

configure: error: OpenSSL version must be 0.9.6 or higher. Aborting.

执行#./configure --prefix=/root/myipsec 的时候,出现上面的错误

查看已安装的openssl版本

# openssl version

OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

解决方法: 安装openssl-devel

#yum -y install openssl-devel

2.configure: error: Unable to find linux-2.6 kernel headers. Aborting.

解决方法：这里需要内核头文件，这里使用2.6.34版本内核源码

#cp linux-2.6.34.tar.bz2 /usr/src

#cd /usr/src

#tar xjvf linux-2.6.34.tar.bz2

#mv linux-2.6.34 linux

3. undefined reference to `yywrap'

#make 的时候出现上面的错误

解决方法: 安装flex

#yum -y install flex

4.../../src/include-glibc/linux/swab.h:6:22: error: asm/swab.h: No such file or

directory

#make 的时候出现下面的错误:

In file included from ../../src/include-glibc/linux/byteorder/little_endian.h:12,

from /usr/include/asm/byteorder.h:53,

from ../../src/include-glibc/linux/ip.h:20,

from isakmp.c:115:

../../src/include-glibc/linux/swab.h:6:22: error: asm/swab.h: No such file or

directory

make[4]: *** [isakmp.o] Error 1

make[4]: Leaving directory `/root/ipsec-tools-0.7.2/src/racoon'

make[3]: *** [all] Error 2

make[3]: Leaving directory `/root/ipsec-tools-0.7.2/src/racoon'

make[2]: *** [all-recursive] Error 1

make[2]: Leaving directory `/root/ipsec-tools-0.7.2/src'

make[1]: *** [all-recursive] Error 1

make[1]: Leaving directory `/root/ipsec-tools-0.7.2'

make: *** [all] Error 2

解决方法: 拷贝swab.h

#mkdir /usr/src/linux/include/asm

#cp /usr/src/linux/arch/x86/include/asm/swab.h /usr/src/linux/include/asm

#cp /usr/src/linux/arch/x86/include/asm/swab.h /usr/include/asm

三、测试

最后，成功进行make和make install

# ls /root/myipsec/

include  lib  sbin  share  var

配置/root/myipsec/sbin目录下的setkey和racoon，成功进行ipsec通信，IPsec-Tools安装成功!