OT: Inbound Connections / Unrestricted APN (DDNS)

[dadiggle]

Dynamic DNS.

DDNS works for Windows Vista, XP Professional, Windows 2000, and the server versions of each (2000, 2003, 2008). It will not work for the Home editions of Vista or XP, versions older than 2000, or non-Windows operating systems, such as Mac OS X, Linux, or BSD and not all ISPs refresh their own DNS servers' data often enough to reflect daily changes, so some users may still run into trouble accessing your DDNS-configured FQDN

 

[ginggs]

DDNS works for Windows Vista, XP Professional, Windows 2000, and the server versions of each (2000, 2003, 2008). It will not work for the Home editions of Vista or XP, versions older than 2000, or non-Windows operating systems, such as Mac OS X, Linux, or BSD and not all ISPs refresh their own DNS servers' data often enough to reflect daily changes, so some users may still run into trouble accessing your DDNS-configured FQDN

You don't understand Dynamic DNS, it has nothing to do with the operating system you are using, there are DDNS clients for just about any version of Windows, OS X, Linux or BSD. DDNS can even be done on your router without your PC even knowing about it. It also has nothing to do with your ISP's DNS servers.

All the DDNS client (whether on your computer on or your router) needs to do is update your Dynamic DNS record at your DDNS provider (e.g. dyndns.com) whenever your IP address changes.

 

[The_Unbeliever]

DDNS works for Windows Vista, XP Professional, Windows 2000, and the server versions of each (2000, 2003, 2008). It will not work for the Home editions of Vista or XP, versions older than 2000, or non-Windows operating systems, such as Mac OS X, Linux, or BSD and not all ISPs refresh their own DNS servers' data often enough to reflect daily changes, so some users may still run into trouble accessing your DDNS-configured FQDN

*cough*

I call BS!!!

 

[The_Unbeliever]

Set up Smoothwall with dynamic DNS. Works just fine. No issues.

And it's three Smoothwalls - two at work and one at home. So far I never had any issues.

Dynamic DNS clients exists for all operating systems, you just have to scratch around a bit. If that fails, port an open-source DDNS client.

What happens here (but it differ from client to client)

1. Dynamic DNS client checks whether http://checkip.dyndns.com/ can be reached or not.
2. DDNS client then retrieves IP address from http://checkip.dyndns.com/ and compares it to its external IP.
3. Or else it compares the IP associated with the hostname with its external IP.
4. If the two differ, then a request is pushed out to the DDNS server to update the associated hostname with the new IP.
5. The updated hostname/IP is propagated throughout the Internet to various DNS servers.

So the fallacy that it will only work with certain OS'es is ruled out.




Which reminds me... I gotta check out why I'm unable to FTP in to my Ubuntu laptop via CellC...

 

[ginggs]

So the fallacy that it will only work with certain OS'es is ruled out.

dadiggle had DDNS confused with dynamic updates in the context of Microsoft Active Directory DNS servers.

 

[dadiggle]

dadiggle had DDNS confused with dynamic updates in the context of Microsoft Active Directory DNS servers.

no wasnt confusing anything.. DDNS additional host software, a new potential failure point on the network, must be maintained. But i notice dyndns.com got software for mac and linux as well.
Reason I mention those is for the tester to look at and test out. All the OS's and how quickly it gets updated. Will help the ISP see where the problems so they can improve on it. dyndns cant do anything if the ISP updates it too slow

 

[Prof.Merlin]

no wasnt confusing anything.. DDNS additional host software, a new potential failure point on the network, must be maintained. But i notice dyndns.com got software for mac and linux as well.
Reason I mention those is for the tester to look at and test out. All the OS's and how quickly it gets updated. Will help the ISP see where the problems so they can improve on it. dyndns cant do anything if the ISP updates it too slow

I may be wrong in saying this. But is has nothing to do with an ISP updating too slowly. Dyndns has a ttl of say 1800(1 hour). The records for the ip will then expire in 1 hour and the dns server will then query for the new records. If you set the ttl to 60, then the records will expire in 60 seconds and dns servers will then query each minute. Correct me if I am wrong.

 

[SilverNodashi]

Too many ppl here think they know what they're talking about...... so, I just need to set the record straight.


Dynamic DNS (aka DDNS) is a way for DNS to automatically update as soon as a host's IP addresse changes. It's commonly used on LAN's with DHCP so that each client (PC / laptop / printer / etc) don't suddenly "drop-off" the LAN as soon as it's IP changes.

http://www.dyndns.org is a company who use this technology to make life easier for people on dialup / ADSL who wants a "permanent presence on the internet". Their software detects when your ISP changes your IP address and then update their DNS database. It doesn't matter who your ISP is, or what they DNS settings are configured like.

 

[dadiggle]

I may be wrong in saying this. But is has nothing to do with an ISP updating too slowly. Dyndns has a ttl of say 1800(1 hour). The records for the ip will then expire in 1 hour and the dns server will then query for the new records. If you set the ttl to 60, then the records will expire in 60 seconds and dns servers will then query each minute. Correct me if I am wrong.

Why not a Static DNS? Its way better for such things

Too many ppl here think they know what they're talking about...... so, I just need to set the record straight.


Dynamic DNS (aka DDNS) is a way for DNS to automatically update as soon as a host's IP addresse changes. It's commonly used on LAN's with DHCP so that each client (PC / laptop / printer / etc) don't suddenly "drop-off" the LAN as soon as it's IP changes.

http://www.dyndns.org is a company who use this technology to make life easier for people on dialup / ADSL who wants a "permanent presence on the internet". Their software detects when your ISP changes your IP address and then update their DNS database. It doesn't matter who your ISP is, or what they DNS settings are configured like.

DDNS is commonly used to allow access your computer remotely, or set up a web, FTP, telnet, mail, or similar server on your machine using the static domain name. DDNS works, but it is frequently unreliable as residential class broadband data circuits are not monitored, maintained, or managed as closely as business class lines.