How To Test A Linux Firewall
Posted 17 December 2004 - 09:24 PM
So decided to put together a little Linux (Suse 9.2 pro) box and make it into a DHCP server, DNS server, Router and Firewall.
I have everything setup and it works great. I configured it so only ports 80,21 and a few others for POP3. SMTP and IM clients can be used to communicate out side the firewall. I also blocked every port ( by default ) for any incoming packets.
Since this is for work will not go live with it until I feel confident it is secure. So how would I go about seeing how secure it is?
The way the network is setup now is:
Cable modem -> Ugate firewall/router -> LAN1 -> Linux Box -> LAN2 ( for testing )
I was thinking that I would just use a PC on LAN1 to try and hack into the firewall. Or at the very least, use some app that would let me know how secure the firewall is.
Any suggestions would be greatly appreciated.
Posted 17 December 2004 - 09:29 PM
Posted 17 December 2004 - 11:47 PM
I had just found it and came here to report back.
Posted 18 December 2004 - 03:53 PM
Posted 18 December 2004 - 08:14 PM
Since this is only a small network it will be just fine. Sure i could cut the responce time of packets down .0025 MS but I will just hold off for a bit.
Posted 19 December 2004 - 12:50 AM
Set up intrusion detection and have your firewall computer alert you should anyone try to break in.
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