Re: using udpsvd in a dns walled garden

Thus said George Georgalis on Tue, 10 Mar 2015 11:48:09 -0700:

> udpsvd 192.168.0.53 53 echo "standard dns response"

udpsvd is  sufficient only to  get you *read*  access to a  UDP datagram
(and any other datagrams send to that  same port as long as your program
is running). It will not get you  a ``connection'' to which you can send
back data.  For this, you will  need a UDP  client that can send  back a
response.

You could use a shell script  combined with nc (netcat), which does have
UDP, to send back a response.

> but that's  not sending the echo  program's output back to  the remote
> connection as desired.

There is no ``connection'' per se, this is UDP, not TCP.

Andy
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