Smoothwall firewall not working....

[RemyCanad]

I installed a smoothwall firewall on a old machine to test it out. It has two network cards in it right now. One is for the "Green" Network (Local) and one is for the "Red" network (The internet).
The way it is set up is it is connected to a switched hub that is connected to a router that is connectecd to a t-1. (I am simplifiing most of this). Then I have a computer connected to the green card via a cross over cable. I am able to access the firewall from the green side and administrate it from there. But I cannot get that computer to access the internet. I have allowed port 80, and 81(this is the port the firewall uses to be administered).
I can ping it from the green site but not from the red.

I am not going to try and make sure that the irq's are not conflicting between the cards...

Well any help is apreciated. Also just a breif discription of a good firewall setup would be nice too. And if anyone knows some iregular ports that I should open up tell me.

thanks

 

[lowtech1]

Make sure you have the correct internal & external IP/Gateway & also check your DNS. And, you might get better help from Smoothwall.org forums.

You might want to open port 25 & 110 for email,
and might want to have port 20 & 21 if you are runing an ftp server,
port 80 if you have a web server.

 

[ttn1]

One thing you can try is to ssh into the firewall and from the command prompt type "ifconfig" . You should see
entries for both eth0 and eth1. If you don't then your red card is not active. If the card is not active, then
I would guess that it is one of 2 things. Either the cards are conflicting with one another or the red card
cannot pull an address for some reason.

My idea of a good firewall setup is one that has the minimum number of ports open. For my firewall the only ports I allow are
22: ssh, 25: smtp(mail sending), 110: pop3(mail recieving), 80: www. Of course, I don't do any online gaming, so I don't
know of any that need opened for that.