>Hi > >Could someone please point out to me where I'm going wrong with the following: > >tcpdump -i eth0 not port 22 and not port 53 not ip proto icmp > According to my man pages, you need to escape the icmp keyword thus (for C-shell) tcpdump -i eth0 not port 22 and not port 53 not ip proto \\icmp It works for me. To avoid the unresolvable ip addr, either aviod DSN lookups altogether with -n , or include 'and not host xxx' where xxx is the ip address you want to skip: tcpdump -i eth0 not port 22 and not port 53 and not host xxx and not ip proto \\icmp Cheers, Terry. >Additionally there's a client popping up that doesn't havea resolvable >hostname how can I exclude it with tcpdump? > >Thanks in advance >Dan > >-- >fedora-list mailing list >fedora-list@xxxxxxxxxx >To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list > -- fedora-list mailing list fedora-list@xxxxxxxxxx To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list