Security

Who Me Too'd this topic

Contributor I

Framed-MTU RADIUS attribute operation clarification

Hello All,

 

This might be a simple one, but l cannot figure out how this attribute works and what exactly it does? As per Microsoft KB:

-------------------------------------------------------------------------------------------------

Framed MTU is used with EAP authentication to notify the RADIUS server about the Maximum Transmission Unit (MTU) negotiation with the client.

-------------------------------------------------------------------------------------------------

In the PCAP l can see that this attribute is included in the Access-Request  packet sent by the AP but the attribute parameter is actually configured on the RADIUS:

Screenshot 2019-01-06 at 14.25.33.png

The value also never honored by the AP, no matter which MTU size I set on the RADIUS, AP always sends it as 1400. I am not sure how AP can even be aware of that value.

 

Thanks,

Myky

 

Who Me Too'd this topic