-
Administrator
Site Admin-
Re: worry NOT
Originally Posted by
Stephen
Thanks. Having the right URL seems to help
Strangely, the other did do a good DNS lookup, just never got an answer from it's server, so I didn't guess the URL was wrong (maybe it's also valid, but it's not answering)
Originally Posted by
Stephen
AFAIK you run a client on your machine that goes out and updates the dyndns.org record with your new It when it changes.
Yea, I get that you run a client. My question is that, when I'm behind a NAT router I'll be on a box who's IP address never changes. It's the IP address of my router that changes, and I'm wondering how the client knows when that happens (since there seems to be no common way to talk to the many different routers out there to determine it). The only way I could come up with that the clients might work is to send frequent update packets to the server and let the server decide if the IP address that are coming from has changed or not, but there certainly could be some other way this happens and I would like to know if I'm overlooking something.
-
Senior Member
registered user
Re: worry NOT
Originally Posted by
Harry Kuhman
Thanks. Having the right URL seems to help
Strangely, the other did do a good DNS lookup, just never got an answer from it's server, so I didn't guess the URL was wrong (maybe it's also valid, but it's not answering)
I got the same thing when I checked the same url just a time out on the server port 80 for the original but I knew it did not look like the right url from seeing people on Debian user who use the same service so I checked a couple of post and there was the correct one.
Yea, I get that you run a client. My question is that, when I'm behind a NAT router I'll be on a box who's IP address never changes. It's the IP address of my router that changes, and I'm wondering how the client knows when that happens (since there seems to be no common way to talk to the many different routers out there to determine it). The only way I could come up with that the clients might work is to send frequent update packets to the server and let the server decide if the IP address that are coming from has changed or not, but there certainly could be some other way this happens and I would like to know if I'm overlooking something.
I believe the idea is the same as something like grc.com does when you probe your ports the client goes out to a site (dyndns.org itself I'm thinking) and uses a lookup to determine the IP you currently have (which would be the IP of the router) and compares to the record it already has if it differs then it changes the record and then your router handles the port forwarding to the IP you choose for the service you will open up.
-
Senior Member
registered user
OOps
Sorry I didn't get back sooner but like Stephen says....
As I pointed out earlier it doesn't actually matter which PC you run it on....
Its a bit more sophisticated than just looking at its IP in the ifconfig and sending that... it actually uses its own protcol to do it.
If you use the ddclient and dyndns.org I can send you the config files I use.
I had to create the init script, not that its hard or anything but I guess it saves messing about!!!
Similar Threads
-
By francy222 in forum Networking
Replies: 4
Last Post: 01-20-2005, 06:27 PM
-
By sn0wflake in forum Hardware & Booting
Replies: 9
Last Post: 04-19-2004, 03:26 PM
-
By tommyf in forum Networking
Replies: 0
Last Post: 10-23-2003, 10:23 PM
-
By pnti in forum General Support
Replies: 4
Last Post: 07-21-2003, 05:15 AM
-
By carmine65 in forum General Support
Replies: 0
Last Post: 01-07-2003, 01:44 AM
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
Supermicro 4U 4x Nvidia GPU AI Server 3.8Ghz 8-Core 256GB 2x10G SFP+ 2x2200W
$3472.00
Supermicro 4U 4x Nvidia GPU AI Server 3.8Ghz 8-Core 64GB 2x10G SFP+ 2x2200W
$3180.00
Intel - Core i9-13900K 13th Gen 24 cores 8 P-cores + 16 E-cores 36M Cache, 3 ...
$689.99
i9 9900k 8-Core 16GB RAM - 1TB SSD - 2 TB HDD - NVIDIA RTX 4060ti - Gaming PC
$1829.99
Lenovo ThinkCentre M900 Intel Core i5-650 8gb Ram 500GB HHD Win 10 pro (READ)
$89.99
Intel - Core i7-13700K 13th Gen 16 cores 8 P-cores + 8 E-cores 30M Cache, 3.4...
$489.99
Intel - Core i7-12700K Desktop Processor 12 (8P+4E) Cores up to 5.0 GHz Unloc...
$419.99
Apple Mac Pro Processor Tray 5,1 2010 2012 2.4ghz 8 core
$79.99
Lenovo IdeaCentre 3 07IRB8 Desktop Intel Core i5-13400 16GB 512GB SSD W11H
$399.99
HP Workstation Z640 2x Xeon E5-2623V4 32GB Ram Dual 256GB SSD K420 Linux GA
$234.98