problem with MTU

RouterOS Beginner Basics
1

Hi all.
I have some clients connecting to a subscriver server via pppoe.
Someone experience problems to connect to some internet-banking sites and I think this could be a MTU problem.
Now I try to change my configuration as follow:

  • in the pppoe profiles: change-tcp-mss=no
  • in the mangle add the rule: “add chain=forward protocol=tcp tcp-flags=syn tcp-mss=1401-65535 action=change-mss new-mss=1400 disabled=no”

My questions:

  1. is this a good configuration or someone knows one better
  2. in my configuration, wich values are better in pppoe server for max-mtu and max-mru ?

thanks

2
  1. is this a good configuration or someone knows one better

If you have change-tcp-mss=yes and decreased max-mtu max-mru, you don’t need to create static mangle rules.
They are dynamically created by router itself.


2. in my configuration, wich values are better in pppoe server for max-mtu and max-mru ?

There is no difference since you have change-tcp-mss=no.