I need help configuring the firewall, as I cant understand the rather basic interface on the bt secureservices portal.

Not really , but when I started playing with my voyager205 ,I found this site -dedicated to hacking BT stuff (and making it work ) Lots of info on there ,if not -ask them -someone might know .

Cheers .

hacking the BT Voyager 205 broadband modem/router. stealth, firewall, port forwarding, NAT, dhcp, ethernet, the works. a nice wee box.

Thats more of a home solution.

I am in the process of trying to sort a new office for a company. They have purchased their internet through BT, and BT have supplied a Cisco 1800 router and a Business oriented firewall. They have a range of external IP addresses assigned to them.

The firewall, has a Wan port, a DMZ port and a Lan port. The router is connected to the Wan port which in turn is assigned one of the IP addresses, and the LAN, well thats obvious.

I can browse the internet from the Lan, and from the device in the DMZ I can ping the DMZ assigned IP address of the router.

What I cant work out is why nothing is working from the outside coming in.

I need to get external email coming in on port 25, to be NAT''d and forwarded to an IP address on the LAN. The same needs to happen for HTTP traffic for a webmail service.

I need to get an external IP to forward to the DMZ for a Windows based VPN connection.

The new office has some loaned servers restored with copies of their live environment so that prior to the move we can configure the network. I should be able to connect to the VPN and telnet on port 25 but I am getting zilch.

No matter what rules I put in I cant get the BT firewall to do what I want. If this had been a Juniper Netscreen based device it would have been a piece of cake. Indeed the same config is in place in their temporary office and I managed to get that all working without any grief.

I have tried speaking to their support team, but they are based in the USA and each time they have tried to fix it, things ended up worse than when I started.

On the plus side the connection is stable and returns 10mb download and 10mb upload consitantly.

Edited 25 April, 200917 yr by mannyo

What happens if you plug directly into the router?

The place I used to work at had a little satellite office and I had some problems with the internet connection there. Basically the firewall was suppressing error messages from the router (both BT equipment). Plugged directly into the router and could see the error messages and our IT people sorted it out straightaway. Obviously if the problem is the firewall this probably won't be much use.

For those who want to know, I fixed the problem and as it happens it was a stupid error on my part. After talking to a BT techie who said it should work, he suggested I check the default gateways. Yes you have guessed it they were configured incorrectly. Once set to the correct values everything just worked.

The live running servers have now been moved to the new office, replacing the test servers and these work perfectly now I know what I did wrong. Webmail, VPN, incoming/outgoing email all working as it should.

I really enjoy IP stuff, and so wish I'd taken the IT route when the opportunity arose in my career past.

Now it's just too damn expensive and risky doing it without being in the role already :(