Map external IP as internal IP?|
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Posted by Joe on November 3, 2005, 11:08 am
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So, all the traffic to that external IP will goes directly to the local IP... Can I set that? Thanks. | |||||||||||||
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Posted by Walter Roberson on November 3, 2005, 11:39 am
Please log in for more thread options :So, all the traffic to that external IP will goes directly to the local :IP... :Can I set that? It depends on the platform and software release. It also depends on whether this traffic to the external IP address originates externally or internally. For example on the PIX series with 6.x software or before, you cannot configure the PIX in such a way that you can have an inside host send a packet addressed to the external IP of something "inside" the PIX and have the PIX translate the external IP to the internal IP and have the PIX then send the packet back through the inside interface that it originally came from. PIX up through 6.x is designed to absolutely always prevent that from happening. [The various workarounds depend upon the PIX model in use, the software revision, and whether you have an internal or external router that is 802.1Q VLAN compatible.] -- Is there any thing whereof it may be said, See, this is new? It hath been already of old time, which was before us. -- Ecclesiastes | |||||||||||||
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Posted by Joe on November 3, 2005, 11:53 am
Please log in for more thread options Thanks for reply.
The traffic to that external IP would be originates internally... Client A---Internet | Firewall | Router-----Client B | Server Like that, Client A and B would be a laptop and need to connect to that global IP(Server)... The external IP would be that "server", with NAT I want to do that so, Client B's traffic no need to go out of the router but directly to "server". The router is cisco 1800 series... Can I do that? and please give some sample configuration.. thanks. | |||||||||||||
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Posted by Matty M on November 3, 2005, 2:09 pm
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Hi, Do you already use NAT on the router or the firewall? Cheers Matt | |||||||||||||
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Posted by Joe on November 3, 2005, 5:26 pm
Please log in for more thread options yes, both the firewall and router do have NAT specific port to that
server. thanks. | |||||||||||||
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>
> The traffic to that external IP would be originates internally...
>
> Client A---Internet
> |
> Firewall
> |
> Router-----Client B
> |
> Server
>
> Like that, Client A and B would be a laptop and need to connect to that
> global IP(Server)...
> The external IP would be that "server", with NAT
>
> I want to do that so, Client B's traffic no need to go out of the
> router but directly to "server".
>
> The router is cisco 1800 series...
> Can I do that? and please give some sample configuration..
>
> thanks.
>