There used to be a handy site http://sni.velox.ch that'd quickly tell you if your browser or a proxy along the way was preventing you sending an SNI header.
I have an IoT device which I can cause to visit any site (and see text output from) - and I just want to see if it is correctly sending SNI. Because it is GSM, it's not possible to break out tcpdump locally.
I have a network with two vlans, both of which refer to my AD server(s) for DNS. Some servers on this network are multi-homed. Lets say we have the two subnets A: 192.168.7.0/24 and B: 192.168.5.0/24. Then we have a server whose hostname is "carrot". Carrot has two IPs, 192.168.5.3 and 192.168.7.3. I want users on each subnet to be able to resolve "carrot.mydomain" to their "local" IP.
Is this possible with Windows DNS server? Do I need to go full "split brain"? Has anyone got any useful links to documentation on these setups, i'm a bit of an MS-DNS newb.
Edit: lets assume the host "carrot" has static DNS entries, and i'm happy to add them to my DNS server. It does not register itself in any way.
...and how do I find out?
Say I am about to reboot a server. I would like to minimize downtime, so thinking about wrapping reboot in an alias that says "hang on buddy, you're going to hit a fsck on boot".
Next question.. what's the best way to say "lets do it next time?" set the last check date?
I know tune2fs can set a bunch of parameters, but how would I get em?
Got 2 SIP gateways (ZultysMX250). Sip trunk between them, they are in separate locations, different subnets 192.168.XX and 192.168.YY connected by IPSec VPN.
Some phones work perfectly. But mine... (and I'm the admin.. grrr) is a bit older, and the guys at the other office can all call me OK, but if I call them, they can't hear me, but I can hear them.
Firewall rules on the VPN are identical to the other phones - all the Aastra 53is work, my Zultys 4x4 doesn't.. some of the 2x2s are strangely intermittent... polycom soundstation IP6000 suffers the same problem as well.
Don't suppose anyone can give me an answer, per se - but where should I look next? Could it be a codec issue?
Edit: now been narrowed down to just a particular phone brand (the original Zultys own brand).