I am experience some issue with the PA-500. I am having some slowness issue when users connect from remote site to HQ local server via remote desktop ( ms-rdp ) application and sometimes unable to connect or disconnected.
Policy rules are : WAN - LAN Source any Destination 10.0.0.10 and 10.0.0.11 (server ip) any any profiles: none
That is the 1st rules.
I had tried to set the QoS for the ms-rdp application and which is still slow when i applied the QoS. Seems like the QoS is not working too.
When i physically bypass the PA-500, the ms-rdp was working fine and very fast.
Did anyone know what may cause this issue?
Software : PAN OS 3.1.6
Deployment mode : Transparent
WAN link : Load balancer on top bottom that support 3 WAN link (total of 10 Mbps link)
I would set up a capture on the palo alto device to stage at receive, transmit, drop, and firewall to see if the palo alto is forwarding the packet in a timely manner. also check to see if there were any packets dropped " show counter global filter delta yes | match drop
". In a previous case we seen that there's a large number of out-of-order frames on the local side, leading to retransmissions. we can modify these tcp settings with the following commands. " set deviceconfig setting tcp out-of-sync ignore "
" set deviceconfig setting tcp drop-out-of-wnd no"
if you need help with any of the above please create a case via the support portal and an engineering will help debug further.
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