ICMP 435 Destination unreachable (Communication administratively filtered)

[Dennis Schneck]

Hi Matthew,

 >You didn't say where you are running wireshark

On the Radius Server

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

on the Radius Server is no Firewall

 >If you are capturing elsewhere then something from the switch up to 
the RADIUS server has a firewall.

I can ask the colleage If he can capture on the switch and the PC behind 
the switch



On 11.08.21 12:33, Matthew Newton wrote:
>
>
> 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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Mit freundlichen Grüßen / Best Regards / 诚挚的问候
Dennis Schneck


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