Join Mike Meyers for an in-depth discussion in this video Dynamic DNS, part of CompTIA Network+ (N10-006) Cert Prep: 4 Making TCP/IP Work.
- I'm a bit of a security nut, so that's why I love…these little webcams.…The problem with these webcams is that,…well, they're behind a NATted router,…so in order for me to access these webcams,…I have to know the IP address…of the WAN side of my router.…Now that's okay, and it's no big deal…for me to figure this out.…The problem is is that I obtain this IP address…via DHCP, so my router, when he plugs…into my ISP, is given an IP address…which changes from time to time.…
So that's what makes these cameras tough…to do long term because this IP address changes.…So to get around this, we're gonna use…a very special kind of DNS known as dynamic DNS.…Dynamic DNS works in a very simple way.…You have some kind of client,…and this client is running behind the NATted part…of the router, and it will go out onto the internet…and it will talk to a DNS service,…and there are companies out there…that provide dynamic DNS as a service,…and they will talk and they'll grab…the WAN IP address.…
These dynamic DNS service companies…have their own DNS servers,…
We are now a CompTIA Content Publishing Partner. As such, we are able to offer CompTIA exam vouchers at a 10% discount. For more information on how to obtain this discount, please download these PDF instructions.
Skill Level Beginner
Q: This course was updated on 06/20/2017. What changed?
A: New videos were added that cover Windows name resolution and the net command.