Hi,
I have the following setup
kernel: 2.6.30.5-43.fc11
iptables-1.4.3.1-1.fc11
192.168.1.0/24 is my public IP range (eth0)
10.0.0.0/24 is my private IP range (eth1)
192.168.1.1 public IP of server
10.0.0.1 private IP of server
I'd like to add the following rules in the nat table:
[1] -A PREROUTING -i eth0 -d 192.168.1.1 -p tcp --dport 8080 -j DNAT
--to-destination 10.0.0.1:8080
[2] -A POSTROUTING -o eth0 -s 10.0.0.1 -p tcp --sport 8080 -j SNAT
--to-source 192.168.1.1:8080
[3] -A POSTROUTING -o eth0 -s 10.0.0.0/24 --to-source
192.168.1.1-192.168.1.10
According to http://www.netfilter.org/documentation/HOWTO/NAT-HOWTO-6.html
iptables is clever enough to avoid overlaps and clashes.
Are we sure that there isn't any chance to map a random packet (not from
the server)
to 192.168.1.1:8080 in rule [3]?
I mean, does rule [2] reserve port 8080 of 192.168.1.1 ?
best regards,
Giannis
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