Resolve an external IP for an internal server, from the internal server...?
When we try and access one of our public facing ip addresses through our internal network, it doesn't work unless we assign a port number other than 80 to the web server.
For example, from a server with an Internal IP of 123.123.123.123 and an external IP of 987.987.987.987... On any workstation, if I access 123.123.123.123 the webpage loads great, but with 987.987.987.987 nothing happens. If I add a port number to the end of the ip (987.987.987.987:5555) then it will load fine (I also assigned that port number to the IIS settings, etc.).
How can I make just plain old 987.987.987.987 resolve internally?
For example, from a server with an Internal IP of 123.123.123.123 and an external IP of 987.987.987.987... On any workstation, if I access 123.123.123.123 the webpage loads great, but with 987.987.987.987 nothing happens. If I add a port number to the end of the ip (987.987.987.987:5555) then it will load fine (I also assigned that port number to the IIS settings, etc.).
How can I make just plain old 987.987.987.987 resolve internally?
SOLUTION
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SOLUTION
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could you advise if the external address works fine from external sources or do you need to use the alternative port number there too?
Additonally, do you use any kind of web filter or proxy to control web access on the site?
also, are you accessing it by ip or name?
also, are you accessing it by ip or name?
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Also, can you provide the results of the following.
From an INTERNAL workstation
http://local.ip.addr
telnet external.ip.addr 80
From an EXTERNAL workstation
http://external.ip.addr
http://external.ip.addr:5555
telnet local.ip.addr 80
telnet local.ip.addr 5555
This will tell you if either your NAT is broken or IIS.
Cheers,
Hades66
From an INTERNAL workstation
http://local.ip.addr
telnet external.ip.addr 80
From an EXTERNAL workstation
http://external.ip.addr
http://external.ip.addr:5555
telnet local.ip.addr 80
telnet local.ip.addr 5555
This will tell you if either your NAT is broken or IIS.
Cheers,
Hades66
ASKER
I setup a 1-to-1 NAT in the router so all traffic from 987... should go to 123...
I dont think that any more forwarding, redirecting,etc. has to be done (and I cannot find anymore any where on the router that looks relevant).