[nos-bbs] rip question...

[jerome schatten]

Thanks Bob… you were correct: closer inspection did show that indeed rip was not affected by shutting down the tcp source ports.

jerome
va7vv/ve7ass

> On Apr 7, 2016, at 17:01, Boudewijn (Bob) Tenty <bobtenty at gmail.com> wrote:
> 
> The rip broadcasts are only at UDP port 520.
> 
> Bob VE3TOK
> 
> 
> 
> On 16-04-07 06:58 PM, jerome schatten wrote:
>> I’m trying to tighten up my iptables filters…
>> 
>> Do the 44net rip broadcasts use any TCP ports?  As best I can see, the broadcasts look like ipip on UDP (port 520)?  I thought to get rid of a bunch of bad guys by dropping all tcp packets coming in from source ports > 1000, and then whittling it down.  When I tried it, I lost the rip broadcasts.
>> 
>> Thanks for any insights
>> ve7ass - jerome
>> _______________________________________________