Without all the rules, it's not easy to reply.
Your NAT rules looks fine but some filter are missing (I thing). FW1
should also accept to FORWARD port 25
If you use rules including --state NEW, you must have other rules like
iptables -t filter -A INPUT/FORWARD -m state --state
ESTABLISHED,RELATE
Hi,
I have an DNAT ISSUE with PREROUTING.
This is my setup.
I have 2 firewalls running iptables.
Pls asume 1.2.3.4/29 is the internet interace of FIRST firewall.
2.3.4.5/29 is the internet interface of SECOND firewall. it has DMZ zone. in
that DMZ zone, mail server runnig @ 192.168.100.3
Now I
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