ICMP 435 Destination unreachable (Communication administratively filtered)

Matthew Newton mcn at freeradius.org
Wed Aug 11 12:33:53 CEST 2021

On 11/08/2021 11:17, Dennis Schneck wrote:
> no firewall active:

There is a firewall, somewhere.

If you used the wrong port you'd get port unreachable.

If there's a firewall then you'll get admin prohibited (or possibly 
something else depending on how the firewall is set up).

You didn't say where you are running wireshark. If it's on the RADIUS 
server, then the RADIUS server has the firewall (because you see the 
requests and the responses). If you are capturing elsewhere then 
something from the switch up to the RADIUS server has a firewall.


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