Hello everybody,

I’m facing another strange issue. After registration of an user, the portal 
should forward to the /access page to then forward to the URL entered before 
the portal came up. However this is not working everytime in the setup (only in 
around 20% of the cases). Otherwise the client is registrated and can access 
the internet but he is not forwarded properly and the session times out and 
then cannot be access the webpage because it has no registration DNS anymore. 

My setup is as follows. Client —VPN-Router -Internet- VPN-Server — PF. For 
those clients Packetfence is configured in inline mode Layer 3. The server is 
running in an active_active cluster configuration because it is also serving 
some VLAN stuff. 

I did some research on my own and I find a strange thing when I was doing 
sniffing with wireshark. In those sessions where it was not working, the 
apache-portal was not replying with the cluster IP but local IP 
(192.168.2.250). In those cases it was working the apache replied with its 
cluster IP (192.168.2.254). For better understanding I have attached the 
sniffed file with both cases (Packet 1-14 not working and Packet 15-22 
working). I have really no idea why the server is acting like that. I also 
could not find any hint in the portal.error. 

I hope you can give me a suggestion what it could be…

Attachment: Capture PF redirect.pcapng
Description: Binary data



Kind regards 
Christian Hanster
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