On Sep 26, 2006, at 6:49 PM, Chris wrote:
I have spent the day trying to get multiple IP addresses rewritten
to a single address using IPFW and NATD. Is there a simple
So as not to leave a hanging post in case someone else searches on
this issue, I'm going to answer myself. I am now successfully using
natd to internally rewrite multiple IPs to a single jail and then
back to their real address, it does seem to be identical to
configuring a private IP network but instead of an interface, I'm
using the alias_address bound to the primary interface. Within the
jail, NameVirtualHost is able to service the various sites by name
through http client/server banter. This will not work if someone uses
unregistered sites unless host tables are created for the http
clients due to the jailed httpd responding from the default site.
This makes the jail very useful to me without disrupting the
environment of the companies web space and the human ramifications
that can cause. If there is a superior way to do this, please correct
me. I also now realize, this should have been posted to FreeBSD-IPFW,
apologies.
(note, these private IPs are really simulating my public IPs)
Addresses on bge0
host IP 192.168.1.222
host alias and jail IP 192.168.1.223
second host alias 192.168.1.224 (simulates a different public address
to be served by the jail after rewriting to 223)
IPFW Pertinent Commands
divert 8668 ip from any to any via bge0 (packets all follow this path)
allow tcp from any to 192.168.1.223 dst-port 80 setup (packets are
rewritten on the way in and follow this path to jail)
allow ip from 192.168.1.223 to 192.168.1.0/24 (packets coming from
the outside on 223 return on this path)
allow ip from 192.168.1.224 to 192.168.1.0/24 (packets coming from
the outside on 224 return on this path)
NATD commands
alias_address 192.168.1.223
redirect_address 192.168.1.223 192.168.1.224
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