Nating to a routed host

[yazeed.ak]

hello all,

i have a question..

can we make PATtting to a host that is not in my subnet..

i want to make a natting with SIP port number(5060) for a host that is not in my subnet..

i have a cisco router and the host that i want to direct this SIP packets is not in my subnet..but i can reach it using routing

my router interfaces:

internal: 172.27.3.10

external(directly connected to SIP provider): 172.29.18.126

and the host that i want to direct the traffic to it is with IP: 192.168.150.11 and i can reach it through other router 10.27.3.1

is it doable to route natted traffic to a host that is not directly in my subnet

[Elton Babcock]

I'm not getting a clear picture of this network. It really depends if your internal subnets are routable on the network to the SIP provider.


If it is not you can do a source NAT/PAT but would need to point this traffic to an IP that is reachable from your external interface.

If you can give me a clearer picture of how this network is setup in sure more people can help.

Elton

Sent from Cisco Technical Support iPhone App

[yazeed.ak]

Dear Elton,

please find below diagram of the network.

i want to direct traffic with port 5060 from host 10.205.20.50 to host 192.168.150.11

[Kyle McKay]

You can definitely do this. There is no requirement for layer 2 adjacency from the router's perspective in order to perform Network Address Translation - in fact, in most scenarios this would not be feasible.

Just create the NAT configuration on the Cisco router as you normally would and you should be good to go!