L2TP/IPSec VLAN no HTTP (port 80)

RouterOS General
1

Hi All

Yet another L2TP snag on my list :sweat_smile: On one of our Mikrotik routers I have 4 incoming L2TP/IPSec connections and although at first glance all looks good (I can ping all devices) I can’t seem to HTTP into any devices on 2 of those connections. If I VPN from my PC to one of those 2 Routers I have no such issue?

How/where does one fault find something like this?

Thanks,
R

2

Looks like a MTU issue. You can measure the mtu using ping … size= do-not-fragment , changing n until you doing the maximum that answers, and adjust the MTU of the interface, etc


Sent from my Redmi Note 5 using Tapatalk

3

Awesome, thanks nostromog, had to lower the MTU to 1350 :wink::+1: