Hi all, I found my Fedora Core 4 installation cannot ping inner network pc by netbios name, but ip address works. [root@N-3 Desktop]# ping N-1 ping: unknown host N-1 I have opened 137:udp, 138:udp, 139:tcp and 445:tcp for Samba share. Are there any other setting related to this issue? Thanks! Best regards, Leon __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com