tcpdump http monitor
Use TCPDUMP to Monitor HTTP Traffic | |
1. 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 example.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 | |
Source: https://sites.google.com/site/jimmyxu101/testing/use-tcpdump-to-monitor-http-traffic |
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