I have been tasked with the job of setting up a firewall at my company. We
have been getting dDoSed a lot and two of our systems were rooted. The dDoS
knocks out our 3com router. After paying 300 bux to 3com to fix it, they told
us to turn off the 3com firewall stuff and build a firewall box. (nice
support).
What I have is a .32/27 network. First I just wanted to put the firewall
behind the router. I had a lot of problems getting that to work. I could not
find any good FM's on that. All I could figure out was that I needed a
Bridge+Firewall.
Now I think that I'm going to put everything on a private subnet and forward
ports...(I think).
Network:
Kernel 2.4.2
Internet <-> Router <-> Firewall <-> Internal systems
.33 .40 .1 10.0.0.x
I have been trying for months to figure out the ipchains and iptables stuff,
but I think I'm just slow.
Where can I find information on building a firewall of this type?
I just want to protect my servers and do my job. (programming)
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