I am using Jay's Firewall configuration utility to configure my iptables firewall. Originally when configured it, all ports were stealthed. But now some of my ports are visible. Ports 25(SMTP) and 53(DNS) are shown as closed and open respectively. Also, I am getting some errors when my system boots up:
ifup: /etc/sysconfig/network-scripts/ifup-post: network-functions: line 224: syntax error: unexpected end of file

ifup: /etc/sysconfig/network-scripts/ifup-aliases: network-functions: line 224: syntax error: unexpected end of file

I havent changed any settings for quite sometime now so how did these ports become 'unstealthed'?

Also, I have set all ICMP requests to be dropped. Is that alright?

Where can I view the logs? I cant find them anywhere in my /var/logs/messages etc...

I am using RedHat 9 and am a newbie so please explain me in detail.