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Ports Required for VPN to Connect

Number of views : 684
Article Number : KB0015544
Published on : 2017-04-26
Last modified : 2019-01-26 00:55:55
Knowledge Base : IT Public Self Help

The Cisco Anyconnect VPN client uses the following ports for functionality.  Without all these ports open, the client will appear to connect for a few seconds then disconnect. 

 

Protocol Cisco AnyConnect Client Port
TLS (SSL) TCP 443
SSL Redirection TCP 80
DTLS UDP 443
IPsec/IKEv2 UDP 500, UDP 4500

 

Note: If you are connecting via a network you do not have administrative access over, you may need to contact the administrator of the network and request these ports be opened.  Many public networks such as coffee shops and hotels may block some of these ports which prevent the VPN client from connecting.

 

 

 

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