Topic: disabling NAT on PPOE

[Joe]

Hi I'm trying to configure a 5.6 server and am running into a NAT issue.

My WAN side is PPOE and my LAN side is also public address space.

My question is: How do I disable NAT on the PPOE interface and just have the sme server route packets?

My configuration

Server Mode servergateway
Local IP address / subnet mask xxx.xx.xx.49/255.255.255.240
External IP address / subnet mask xxx.xx.xx.74/255.255.255.0
Gateway  

DHCP server enabled
Beginning of DHCP address range xxx.xx.xx.50
End of DHCP address range xx.xx.xx.62

What I get: The world see's everything as the xxx.xx.xx.74 address.

Any helpfull suggestions would be appreciated!

Joe

[Dave Liquorice]

> My WAN side is PPOE and my LAN side is also public address space.

That LAN side public address space. Is that randomly chosen range of IPs or actually allocated to you?

Not wishing to teach the obvious, the LAN side should be using one of the address ranges allocated for private networks: 10.x.x.x, 172.16.x.x or 198.168.x.x.  Unless you have some very good reason for using public address space *and* have those address's allocated to you.

See RFC1918 for details and reasoning (RFC1918 may have been superceeded but I doubt that much has changed).

Cheers
Dave.

[Joe]

Yes, the ip block has been allocated to me and yes I have sufficient reason to stay on the public side. I thought I was making that point when I said that it was a public address space that I was dealing with but a little bit of clarification never hurt anybody And you are pointing out a valid... well, point, for people with less experience than even I.

thanks,

Joe