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will Port forwarding 443 no longer allow me to access my ASA VPN login page

Posted on 2011-03-24
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Last Modified: 2012-05-11
If I only have one public IP and I forward 443 to a nat ip behind the firewall would I still be able to access the VPN login page?

Currently xxx.xxx.xxx.xxx = my asa vpn login page if forwarded to 192.168.2.1 would I still see my vpn page. I am guessing nope.
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Question by:newbsauce
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by:Le_Rocca
Le_Rocca earned 166 total points
ID: 35210664
If you only forward 443 then you dont have http forwarded so you will not see the vpn login page i guess thats a webpage ? then you should also forward port 80
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by:newbsauce
ID: 35210767
I have not forwarded anything at this point. I currently login using the asa web vpn. https://xxx.xxx.xxx.xxx

Some one wants me to forward 443 to an internal machine. I am thinking then no one could access our web vpn. Name says it all. I am newbsauce at this. Thank you for responding.
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expert1010 earned 167 total points
ID: 35210822
No. You shouldn't. In this case you're sending a packet with destination IP to your external adress with the port 443. The firewall sees nothing else.

What you can do is run the webserver on another port and specify that when you want to reach it.

For instance 4443 instead of 443. And reach it by this.

https://v.x.y.z:4443

You'll have to configure ASA to run on 4443 before you configure port forwarding of 443. ASA will complain with someting like this otherwise:

static (inside,outside) tcp interface 443 1.1.1.1 443 netmask 255.255.255.255 tcp 0 0 udp 0 unable to reserve port 443 for static PAT

Or similar.
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by:Pete Long
ID: 35213926
You can of course change the port that the VPN is running on!
Also be aware that ASDM access will need to be on another port if you access it from outside.
Like so http://www.petenetlive.com/KB/Article/0000268.htm
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by:Pete Long
Pete Long earned 167 total points
ID: 35214275
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