Hi Naim: Check with "ps ax" if you have samba daemon running. Look for smbd and nmbd servers. Best regards, Leonardo Balliache Naim wrote: were too many connections attempt to my server at port 137 with UDP and TCP, when I look into log files. In file /etc/services it says netbios-ns 137/tcp #NETBIOS Name Service netbios-ns 137/udp #NETBIOS Name Service Im not sure what this services for, so I disbale it. Im using unix FreeBSD 4.5-STABLE ,AFAIK this services is Microsoft prorietary so anyone can explain what this services for in unix environment or is there any remote exploit on it? TIA -Naim