Steps for installing the tcpcopy offline version in ubuntu

In the previous article, I have already used the online version of tcpcopy. Today I will share with you the usage of the offline version of tcpcopy. The tcpcopy online version requires at least two machines, while the offline version requires only one machine.
Uninstall the online version of tcpcopy
Skip this step if no installation is available.
 

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# Cd tcpcopy-0.6.0 # Make uninstall # Cd .. # Rm-rf tcpcopy-0.6.0

Install libpcap
To install the offline version of tcpcopy, you must first install libpcap. The latest version I downloaded is the libpcap-1.3.0
 

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# Tar-zxvf libpcap-1.3.0.tar.gz # Cd libpcap-1.3.0 #./Configure # Make # Make install

Three errors will occur during installation.

 
./Configure: error: Your operating system's lex is insufficient to compile libpcap.

Solution:

# Apt-get install flex

 
Make: yacc: Command not found

Solution:

# Apt-get install biso

 
/Usr/local/lib/libpcap. so: undefined reference to 'pcap _ parse'

Solution:

# Apt-get install libpcap-dev
Install the offline version of tcpcopy
 

The code is as follows:	Copy code
# Tar-zxvf tcpcopy-0.6.0 .tar.gz # Cd tcpcopy-0.6.0 #./Configure -- enable-offline # Make # Make install

Tcpcopy for offline use
1. Capture packets from online servers
 
Tcpdump-I any tcp and port <port>-s 0-w online. pcap
2. Start the tested program on the test server.
3. Start intercept on the test server
 

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# Modprobe ip_queue # Iptables-I OUTPUT-p tcp -- sport <port>-j QUEUE # Intercept

4. Start tcpcopy on the test server

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# Tcpcopy-I <packet capture file address>-x <port>-<local ip address >:< port>

Example image: