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Network_center1's avatar
Network_center1
Icon for Nimbostratus rankNimbostratus
Nov 04, 2019

Slow FTP connection behind F5

Hello there,   I have an issue I don't understand.   Some customers connect on one of our FTP server behind the F5. Public IP of the virtual server on port 21 > default pool > one server por...
application delivery
BIG-IP
Network_center1's avatar
Network_center1
Icon for Nimbostratus rankNimbostratus

F5 support don't have a single clue on my issue, for them it's either server side or LAN side.

It's logical concidering that we only have this issue with this particular VS.

But it's doesn't help me much :D

boneyard's avatar
boneyard
Icon for MVP rankMVP
Dec 08, 2019

so the delay starts at the FTP server? have you done a packet capture on the server to see if the delay of 5 seconds is actually there?

 

is there another FTP server to test wit

 

if you run the ftp command from the BIG-IP CLI does the same happen?