Configure and install IPSec tool 0.8 in rhel6 and centos6.3

1. Go to the website http://sourceforge.net/projects/ipsec-tools/download the latest IPSec tool 0.8 source code compressed package

2. decompress the package and run the./configure command.

3. Make

4. Make install

Complete

3. Many errors will be prompted during the make process. refer to the following solution:

1. Checking OpenSSL version... too old

Configure: Error: OpenSSL version must be 0.9.6 or higher. Aborting.

The above error occurs when you execute #./configure -- prefix =/root/myipsec.

View installed OpenSSL versions

# OpenSSL version

OpenSSL 0.9.8e-fips-rhel5 01 Jul 2008

Solution: Install OpenSSL-devel

# Yum-y install OpenSSL-devel

2. Configure: Error: unable to find linux-2.6 kernel headers. Aborting.

Solution: the kernel header file is required. The kernel source code of 2.6.34 is used here.

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

# Cd/usr/src

# Tar xjvf linux-2.6.34.tar.bz2

# Music linux-2.6.34 Linux

3. undefined reference to 'yywre'

# Make errors

Solution: Install flex

# Yum-y install flex bison

4 ../src/include-glibc/Linux/swab. h: 6: 22: Error: ASM/swab. h: no such file or

Directory

# The following error occurs during make:

In file encoded ded 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

Solution: Copy swab. h

# Mkdir/usr/src/kernel source code directory/include/ASM

# Cp/usr/src/kernel source code directory/ARCH/x86/include/ASM/swab. h/usr/src/kernel source code directory/include/ASM

# Cp/usr/src/kernel source code directory/ARCH/x86/include/ASM/swab. h/usr/include/ASM

5. if the preceding error occurs, modify the configure file and change cflags = "-g-O2" to cflags = "-g-O2-fno-strict-aliasing ", and then re-configure.