In The Name Of God Thanks alot for your attentions ; Yes ,service is inetd .How can port 113 be closed ?
#netstat -lnop|grep ":113" > tcp 0 0 0.0.0.0:113 0.0.0.0:* > LISTEN 3550/inetd off (0.00/0/0) > lsof -i :113 > COMMAND PID USER FD TYPE DEVICE SIZE NODE NAME > inetd 3550 root 5u IPv4 9108 TCP *:auth (LISTEN) > Regards dehqan