Here is what happened when I did your command: # tcpdump port 25
tcpdump: verbose output suppressed, use -v or -vv for full protocl decode listening on eth0, link-type EN10MB (Etherned), capture size 96 bytes (ctrl + c) 0 packets captured 0 packets received by filter 0 packets dropped by kernel -- --- You received this message because you are subscribed to the Google Groups "ossec-list" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/groups/opt_out.
