What are the security risk in opening some UDP ports

[loi @ gov . on . ca (Ian Lo)]

Hi,

Can anyone tell me what are the security risks and how vulnerable in
opening up the following UDP ports to outside network. i.e. allow
outside network to access directly the inside network via the following
UDP ports:
UDP ports      services
42              name service
53              domain
70              gopher
80              www
119             nntp
123             ntp
191             propspero
210             wais
and ports >1023

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Ian Lo                  + Sr. Telecommunications Planning Specialist
(416) 327-4254          + Management Board Secretariat
fax (416) 327-3281      + Ontario Government
loi @
 govonca .
 gov .
 on .
 ca   +
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