On Friday 14 May 2004 14:19, azeem ahmad wrote: > hi > please tell me how can i save the output of tcpdump to a file > > i tried -F anf -w but it doesnt seem to work -w is the one to use, but you do need to tell it a filename. However, what I meant was simply copy + paste the output you see on the console since that will be a lot easier for us to glance at.. I mean the stuff like this: tel# tcpdump -i eth1 -n port 25 tcpdump: listening on eth1 14:39:37.592117 10.0.0.52.3564 > 194.200.209.13.25: S 1292097321:1292097321(0) win 64240 <mss 1460,nop,nop,sackOK> (DF) 14:39:37.592174 10.0.0.254.3564 > 10.0.0.253.25: S 1292097321:1292097321(0) win 64240 <mss 1460,nop,nop,sackOK> (DF) 14:39:37.592353 10.0.0.253.25 > 10.0.0.254.3564: S 958030498:958030498(0) ack 1292097322 win 5840 <mss 1460,nop,nop,sackOK> (DF) 14:39:37.592381 194.200.209.13.25 > 10.0.0.52.3564: S 958030498:958030498(0) ack 1292097322 win 5840 <mss 1460,nop,nop,sackOK> (DF) 14:39:37.592587 10.0.0.52.3564 > 194.200.209.13.25: . ack 1 win 64240 (DF) 14:39:37.592603 10.0.0.254.3564 > 10.0.0.253.25: . ack 1 win 64240 (DF) Cheers, Gavin.