How Do We Monitor HTTP traffic

To the upcoming developers, welcome aboard!

To monitor HTTP traffic including request and response headers and message body:

tcpdump -A -s 0 ‘tcp port 80 and (((ip[2:2] — ((ip[0]&0xf)<<2)) — ((tcp[12]&0xf0)>>2)) != 0)’

2. To monitor HTTP traffic including request and response headers and message body from a particular source:

tcpdump -A -s 0 ‘src kisheateq.com and tcp port 80 and (((ip[2:2] — ((ip[0]&0xf)<<2)) — ((tcp[12]&0xf0)>>2)) != 0)’

3. To monitor HTTP traffic including request and response headers and message body from local host to local host:

tcpdump -A -s 0 ‘tcp port 80 and (((ip[2:2] — ((ip[0]&0xf)<<2)) — ((tcp[12]&0xf0)>>2)) != 0)’ -i lo

4. To only include HTTP requests, modify “tcp port 80” to “tcp dst port 80” in above commands

5. Capture TCP packets from local host to local host

tcpdump -i lo