---------- Forwarded message ---------- From: Saurabh Mehrotra <saurabh1980@xxxxxxxxx> Date: Mon, 22 Jan 2007 21:29:46 +0530 Subject: Iptables problem help required !!!! To: netfilter@xxxxxxxxxxxxxxxxxxx Hi , I am using Red Hat Enterprise Linux AS release 4 (Nahant Update 3) with Kernel 2.6.9-34.ELsmp #1 I am using Iptables for firewall . But without firewall I m able to nslookup my own DNS server but whenever I enabled firewall I am not able to nslookup to my own system. And log files shows the following entry . RULE 0 -- ACCEPT IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=60 TOS=0x00 PREC=0x00 TTL=64 ID=15607 DF PROTO=TCP SPT=46994 DPT=25 WINDOW=32767 RES=0x00 SYN URGP=0 Jan 22 15:52:01 trench1ams crond(pam_unix)[13126]: session closed for user root EVEN This rule 0 is also accept rule for SSH not for deny... I have added rule to accept my own system traffic ...to allow any service but still tje proble, is same .... root@trench1 ~]# nslookup trench1 Server: 212.165.108.4 Address: 212.165.108.4#53 *** Can't find trench1ams: No answer Please advice me how can I overcome with this problem ....... Thanks Saurabh
