Hi all, I need some help routing or making Nat on a LAN.You need to tell the Linux server, that it can reach the clients on LAN A via the 192.168.1.1 IP address. This can be done by putting a route in the routing table of the linux box, along the lines of this command:
I have something like this:
I N T E R N E T ----------------- ^ ^ | | fxp0 public IP public IP | | FreeBSD server LINUX server | | dc0 192.168.10.1 | dc1 192.168.1.1 ^ 192.168.1.3 ^ | ^ | | | | | | ---------------- | Switch/Hub | ---------------- | | ------------------ ----------------- | LAN A | | LAN B | | 192.168.10.2-254 | | 192.168.1.4-100 | ------------------ -----------------
I have running a FreeBSD server as a gateway and DHCP, the server share the Internet to all the computers on LAN A (192.168.10.0/24).
The server have 3 network cards:
fxp0 is public IP. dc0 is the gateway for the LAN A "192.168.10.1". dc1 has IP 192.168.1.1 ( need help with this ).
Right now i am just using fxp0 and dc0 so any computer on the LAN A "192.168.10.2-254" can have Internet, my ipnat.rules file looks like this:
-- map fxp0 192.168.10.1/24 -> 0/32 portmap tcp/udp auto map fxp0 192.168.10.1/24 -> 0/32 --
until that point everything just work OK.
There is another network, I will call it LAN B, this LAN make the same thing that i am doing with the FreeBSD Server, but instead it uses LINUX, the m achine have 2 network cars.
eth0 has a public IP. eth1 is the gateway for the LAN B "192.168.1.3"
Both networks are connected to the same switch/hub, but now i need that
the computers of LAN A can see "ping" computers on LAN B.
route add -net 192.168.10.0/24 192.168.1.1
Offcourse, the syntax might be slightly off.
If you *REALLY REALLY* cannot make this change on the Linux box (really, it's only minor, nothing to worry about for it's sysadmin) you could try to NAT the traffic when going from LAN A to the server. This however will only make connections /FROM/ LAN A /TO/ the Linux box possible. Connections /TO/ LAN A /FROM/ the Linux box will not be possible.
This should work with an ipnat rule that goes something along the lines of:
map dc1 192.168.10.0/24 -> 192.168.1.1/32 portmap tcp/udp auto map dc1 192.168.10.0/24 -> 192.168.1.1/32
HTH & HAND
--
Simple guidelines to happiness:
Work like you don't need the money,
love like your heart has never been broken and dance like no one can see you.
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