Performance degradation VPN gateway

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L0 Member

Performance degradation VPN gateway

We recently enabled/ configured/ deployed GlobalPortect on our PA firewall as a first step to replace our existing DirectAccess VPN solution. The GlobalProtect is a brand new installation, performed by a PaloAlto authorized consulting firm. We are piloting 3 business users and 5 IT, group users. Our 3 business users are complaining on a daily basis the VPN tunnel back to the office is very slow compared to the previous VPN solution which both traverses on the same firewall and same internet pipe bandwidth, which is 1.00Gbps so we know there is plenty of bandwidth. When we do a simple file transfer from the GlobalProtect client to an internal Windows File Server, the transfer of a 4.0 Gb is painfully slow to 3kpbs where when we perform the same test over the previous VPN is a heck of lot faster, way faster. I have a ticket opened with PaloAlto Support, but man I must say, they are useless, NOT happy at all with their lack of response back and forth. I am hoping someone here can assist me. Frustrating to say the least. Thanks everyone.

L4 Transporter

Hello @Erasmo 

If the traffic via DirectAccess to the server passes the firewall without inspection, you could disable inspection via GlobalProtect as well to compare the performance. Consider to enable inspection after your tests.

Another parameter which is worth being checked is the MTU. Set the MTU on the tunnel interface (where GP terminates) to 1300.

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