[AusNOG] SRV Records

[ANSA SERVERS]

Hey Guys,

Quick question for all the network security buffs on the list....

Are SRV dns records dangerous and should we continue to  block them at our border router?

I am asking this because we are seeing massive amounts of traffic being blocked (and ips hitting out blacklist) from our network because they are trying to query our dns cluster for these records.

These are the default options in the dns proxy policy for the firewall that where set when it was installed - but we already know the people that installed the firewall had no idea what they were doing...

So what exactly are these SRV records and what are they used for. We have no reason to block them if they pose no risk to our network.

Regards,

Matthew Matters  Managing Director / CEO of Aus Net Servers Australia Pty Ltd
Management Department  |  Small Business Hosting Sales & Services  |  Aus Net Servers Australia Pty Ltd
P  1300 933 038  |  M  0428 028 091  |  E  mmatters at ausnetservers.net.au<mailto:mmatters at ausnetservers.net.au> |  W  www.ausnetservers.net.au<http://www.ausnetservers.net.au/>
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