We had been running 5.4.9 for a while. Today we upgraded to 6.1.3 and now our l2tp vpn service stopped working.
The setup is as follow
2 ISP into balance380
Balance 380 to LAN
OSX server running l2tp vpn on LAN1
The setup used to work without an issue before the upgrade to 6.1.3
I have setup IPSEC NAT-t option in my balance380. I also added additional ports to it without any success. When looking at ipsec logs in my balance380 i see the following.
[TABLE=“class: stat_table, width: 761”]
[TR=“class: zb2, bgcolor: #E1F1FF”]
Jan 09 15:37:19
IPsec: Refused Main Mode connection request from 220.127.116.11
Which makes me think that the l2tp request is being taken by the peplink and not sending it to the assigned server inside.
I have setup ip x.x.x.20 (public ip ) on a 1-1 nat to my internal ip 10.10.0.11
i actually have other services working on that server without any issues. so the NAT is working
also the firewall is wide open for that service. Like I said only change today was update from 5.4 to 6.1