Forum Discussion
mrshaggy_169440
Jan 15, 2016Nimbostratus
If we I do a tcpdump during user access test using VPN, it show a lot of TCP SYN retransmission. It seem like the SYN packet from F5 was not received by server, or the SYN-ACK packet from server was not receive by F5, so F5 keep sending the SYN packet. But as I mention previously, if I do curl from F5 into server, F5 get the proper response from server. So it means that basically F5 can reach the server, but I don't know why F5 can't access the server during user VPN session that makes F5 keep sending SYN packet to server..