Clientless VPN - Application is not accessible

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Clientless VPN - Application is not accessible

Hello All,



This is my topology I have configured Clientless VPN hosting two application as, (external-application) and (internal hosted application). But i am unable to access the application that hosted inside. In this question have attached my configuration also.  other than that there is no sent byte for clientless-VPN traffic also.








q2.jpgQ3.jpgExternal application works but no sent bytes ?External application works but no sent bytes ?q5.jpg


ISSUE NOTE : 1.External Application working but there is no sent bytes

                         2.Internal Application not accessible


L6 Presenter

This sigfnals a routing issue or DNS issue as 0 bites are send. Check if the DNS resolution is working for the Palo Alto as maybe the routing or Service route is wrong (palo alto by default uses the managment):



Also check the config:



Finally just check the global counters, tcdump for drops and the security policy:




Also there are a lot of articles for debuging web issues for clientless vpn and try using different browsers:


L6 Presenter

Hello, Did you test the DNS resolution and routing are correct ?  If so using another browser as your error seems to be seen a lot for chrome browser and then finally doing tcpdump/pcap capture for the rewrite action to see how Palo Alto rewrites the HTTP/HTML content and you can find this from the links I shared and also using Fiddler to see how direct access to application looks like without the Clientless VPN and with it and to compare.

  • 2 replies
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