[Gllug] Firewall setup Routing

[Simon Perry]

Hi,

I would like suggestions of a firewall package to handle the following 
or an idea of the complexity of rolling my own.

Router 1                           ETH ADSL( internet static IP)
(leased line                                    |
service DHCP)                              |
          |                                           |
##################################
#                                                                #
#                Firewall box?                            #
#                                                                #
##################################
                               |
                Local area network 20 clients

An application used by all the clients will need to communicate via 
calls to a single IP address with router 1 all other traffic will go 
over the ADSL, all connections/routing will need NAT'ing. Ideally I 
would like a package that has regular security patches so I don't have 
to continually monitor, configure and update the software myself.

TIA

Simon
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