What is Port 443? Why do SSL VPNs make use of it?
I am setting up a Web SSL VPN for remote access across my WAN. Can someone explain why SSL VPNs use Port 443? Can I use any other port?
Software/Hardware used:
Software/Hardware used:
ASKED:
April 22, 2010 7:10 PM
UPDATED:
June 7, 2012 2:20 PM
Answer Wiki:
TCP port 443 is the standard TCP port that is used for website which use SSL. When you go to a website which uses the https at the beginning you are connecting to port 443. You should not use a different port number, because if you do then your users will need to enter the port number in the URL when accessing the Web SSL VPN.
You can redirect users to a non standard port without having them input the port number in the SSL VPN address by using firewall rules that direct traffic to the correct host and port.
IMHO there is no security benefit to using non-standard ports as port scans will discover any open and accessible ports.
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You can use any non-standard port you like e.g.8443. You traffic will still be encrypted as you use the SSL protocol. Most people who already have some server hosted on port 443 have to publish the SSL-VPN server on a different port.
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