public network traffic to my ip address port 53

[Ernie Luzar]

Olivier Nicole wrote:
> Ernie,
>
>   
>> In my firewall log I see thousands of udp packets from ip addresses all 
>> over the word trying to access my freebsd gateway server on port 53.
>> Right now I am blocking them and see no negative effects.
>> Is there any valid reason to allow these unsolicited inbound packets 
>> access to my system on port 53?
>>     
>
> You know port 53 is DNS?
>
> Maybe your IP was previously used by a DNS server.
>
> If you bloc port 53, you may consider leaving it open enough to be able
> to solve your own DNS requests.
>
> Olivier
>
>   
I have been running this home server for 15 years and have never had a 
dsn server.
Last time I scrutinized  my firewall log was 2 plus years ago and I did 
not have all this unsolicited inbound dns traffic.
To me it looks like a search for dos targets. To my knowledge dsn 
servers DON'T  roll through pubic IP address  ranges looking for other 
dsn servers.
So I ask the question again "Is there any valid reason to allow these 
unsolicited inbound packets access to my system on port 53?".