named tcp dos?
randy at psg.com
Thu Aug 2 20:27:16 UTC 2018
>> estimate or measure the distribution of the ratio of udp to tcp
>> queries on say 100 cctld servers
> bla - 512 bytes are easily exceeded
> more than 10 years ago i also thought i am smart and TCP 53 is only
> needed for zone-transfers until i realized that random e-mail errors
> where the result of large TXT records including way too verbose SPF
> open TCP 53 for the world and all problems where gone forever
in my case, tcp was open and that is where the problem arose :)
i am trying to tune per daniel's
> Depending on your "max-udp-size" value (default 4096) you may also
> want to increase "tcp-clients" setting (default 150).
and am trying to understand the space
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