GETs
ngrep -q '^GET .* HTTP/1.[01]'
POSTs
ngrep -q '^POST .* HTTP/1.[01]'
Other solutions
ngrep -d eth0 -W byline port 80
GETs
ngrep -q '^GET .* HTTP/1.[01]'
POSTs
ngrep -q '^POST .* HTTP/1.[01]'
Other solutions
ngrep -d eth0 -W byline port 80