I have a general query about SRV records and just need a bit of clarification. I have a customer who has registered a domain for their VCS express, (tp.example.com). When I do a dns lookup it brings back the correct public ip address of the vcse. Now I will be confuring this system shortly however I dont know anything about SRV records.
Do I have to get the customer to forward the relevant SRV records to their ISP for their external dns host?
Also the customers public domain is the same as their internal domain. Im guessing the exact SRV records need to be added to their internal DNS server too?
Thanks for your help
p.s If there is a good guide on adding srv files etc then ide appreciate it if you could forward me the link. Thanks again
My internal DNS folks were a great help setting our SRV records up... and helping educate me a bit on how they work
I now know enough to know what I want and to be dangerous
Standard DNS "A" records are pretty easy to look at with the nslookup command, however I struggeled with the the command line options to use nslookup for SRV records..
Someone recommend http://digwebinterface.com/ and oncce I figured out how the site worked, I was able to lookup and see our SRV records easily
In the VCS X7.2.2 web interface there is also a DNS lookup function...
If you go there and enter Cisco.com or Tandberg.com and then select SRV records from the pull down you can see what SRV records are out there...
I also think there is more than 1 right answer... especially when there are multiple VCS-Expressways and at multiple sites. I think at the time I gave my internal DNS folks a screenshot of how the public Cisco/Tandberg records were setup and they better understood what I wanted.
There are lots of posts on the forum that talk about SIP based attacks to try to access ISDN gateways for Toll Fraud, we killed alot of those attempts by disabling SIP UDP... in retro, I probably would no ask that the SIP UDP SRV records be published, since they are off in the VCS-E...
Security folks indicated that UDP traffic is easly spoofed and that is why the attacks are UDP based
Ive just used to the website to do an srv record lookup and it doesnt look as though they're set up. It does point to the correct ip address though. Do you think I can still get video calls working using the domain name to call without the srv records?
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
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