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DHCP clients inside firewall part II

DHCP clients inside firewall part II

Post by johno vega » Wed, 26 Jul 2000 04:00:00



Setup: Ipchains firewall RH6.2 w/2 nic's
I would like my firewall clients to recieve their network configurations
from out side the firewall.  I do not want the internal clients use the
internal interface as their default gateway.  I want them to use the same
setup as users out side the firewall.  The internal interface will foward
all traffic using access lists.

My problem is the numbering of the internal interface of the firewall.  
how should I set it (static is fine) but what about DHCP from across the
external interface how will this affect the internal clients

I think this would be similar to a DMZ setup used by Web servers setup
between 2 firewalls, one firewall for the outside world and one for the
LAN.  I only understand the white board aspects of this setup, I have no
expierence with the techneques involved.

Any suggestions would be very helpful.

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Top

1. FTP client inside linux firewall communicating with FTP server inside another linux firewall

I am trying to use an Windows FTP client (BPFTP) behind a linux
firewall computer running ipchains and ipmasqadm portfw to communicate
with an Windows FTP server (War, G6, ServU) behind another linux
firewall set up more or less the same way. The server is on port 21,
but I have port fowarding on the linux box that redirects port 27015
to port 21 on the internal FTP server. I also forwarded port 20 on the
external firewall to port 20 on the internal computer with the FTP
server. I can communicate with the FTP server from outside the
firewall from an un-firewalled computer, but not using PASV. From the
FTP client inside the linux firewalled LAN I can connect, but do
nothing else. I'm sure someone in this group is very familiar with
this issue and can help me.

Any help will be appreciated. Thanks.

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