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19

Seems like it's a bug in recent DD-WRT builds. Use iptables: iptables -t nat -I POSTROUTING -o br0 -s 192.168.1.0/24 -d 192.168.1.0/24 -j MASQUERADE (change your subnet according to your specific LAN) From http://hax.at/text/41


14

You cannot set a CNAME record for a root domain (e.g., example.com) because that would break RFC 1034 section 3.6.2, which states, If a CNAME RR is present at a node, no other data should be present; this ensures that the data for a canonical name and its aliases cannot be different. You can’t do this for example.com because example.com will also have ...


10

Famous one – I can haz IP: $ curl icanhazip.com 1.2.3.4 And that's it.


6

bind v9 has support for dynamic updates: zone "example.net" { type master; file "zones/example.net.db"; update-policy local; auto-dnssec allow; key-directory "keys/example.net"; }; You can use nsupdate to manage the zone locally, or call nsupdate from a CGI script (accessed by the client PC, like DynDNS updater), or use nsupdate ...


5

You have some misconceptions, so I'll try to explain the whole process. (I'm good with the details since I involved in operating a public dynamic DNS service). Let's say your domain is example.com, and let's say example.com domain hosted with some dynamic DNS company, let's call it lightfastdns.net (fictional name). Your domain contains DNS record - ...


4

First of all, this AirPort feature relies on a working "dynamic DNS" setup. If you let someone else host your domain and manage your DNS, get them to set it up and get the TSIG key name and private key for updates. If you manage your own, first follow a tutorial on configuring dynamic updates in your DNS server. Afterwards: In the (dynamic global) ...


4

Running an email server on dynamic DNS, while certainly possible, is a bad idea. Here's why: http://www.arschkrebs.de/postfix/postfix_why_dyndns_does_not_work.shtml If you don't want to get a static IP, then I'd suggest checking into the various email hosting services (google for "email hosting") and see if one of those might fit your needs.


3

No. The change does not need to propagate to every DNS server in the world. If you change something and someone queries the changed record on your DNS server the result is instantaneous. The problem is if you queried this name before and it got cached. Then you will get the old IP until the cache expires. In DNS you can set how long an old query is valid, ...


3

My previous answer contained false information because I had a few misconceptions regarding how DNS changes are propagated. So here is a second attempt. For a detailed explanation, I encourage you to read Alex answer. To my understanding, there are 2 factors involved in how quickly a DNS change propagates: Zone transfers between the DNS servers that are ...


3

There's a few options. Pagekite sounds the most simple and direct - it does everything you ask for and is publically accessible You might be able to go with some form of reverse ssh and tunnel everything through that. You'd need to establish the connection from the campus network to your home connection (where you'd need to set up port forwarding and such), ...


3

Just to add to the already helpful answers, here's confirmation from GoDaddy that as of 1 week ago (May 2012) they do not directly support dynamic DNS: http://support.godaddy.com/groups/domains-management-and-services/forum/topic/dynamic-ip-1/ Sounds like you would be best off migrating your domain to another company. If you like No-IP they can handle a ...


3

2. There is a command line client for MacOS - inadyn. Inadyn is configurable and supports different Dynamic DNS providers. Also with some services you can use simple curl run as a cron job as a client. curl is a command-line tool, and is installed by default on MacOS. For an examples of how to do dynamic DNS with command-line, you can look at instructions ...


2

Routers typically don't route back to the internal servers. If you have a server running DD-WRT or a similar O/S you may be able to enable hairpin routing to do this. Your router may allow you to configure routeback which enables hairpinning. Your router is likely forwarding the DNS request out to your dynamic DNS provider. Some routers allow you to ...


2

However, in GoDaddy they ask for an IP to specify where is the site hosted. How can I do this? Since GoDaddy hosts your DNS for you, they want to know where to point DNS. If you use a Dynamic DNS service you will need to move your DNS to them. More info: http://serverfault.com/questions/234625/godaddy-hosting-with-dynamic-ip


2

Your webserver is redirecting but has not been configured with a DNS name so uses it's internal IP_address in the redirection response. Configure the domain name in the webserver software.


2

That has got nothing to do with your router. You need to add your domain name to the web-server. If you are using apache, then you may have to add your domain name to the vhosts file. Read more here: http://support.aiso.net/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=243


2

Unfortunately D-Link routers contain only a simple dynamic DNS agent which directly uses IP address from the WAN interface without checking if it is public or not. In your case you are using a directly connected USB 3G modem so you are already using the IP address you get from your ISP. The ISP is performing NAT (address translation) of the private IP ...


2

I can see why that manual isn't very helpful... nothing about port forwarding, nothing about turning off Remote Management. Remote Management is what you are running up against right now, since most home routers by default use port 80 to allow remote management access. One solution is to use another port for your home server, like 8080 for example. Then, ...


2

You can not set naked domain name in CNAME records. You must have to do ONLY those settings for alias domains like www.example.com , about.example.com and more at CNAME records and the primary or ROOT domain settings must be done at A Records and you have to provide IP address of host. First delete the settings from CNAME about the naked domain and set it ...


2

It's possible to run a smtp on a dynamic IP with a small delay (due to the caching nature of DNS) on delivery when your IP actually change. Easiest setup I suppose is dyndns which has clients for all major OS's. As for the scenario postfix address rewriting should do the trick.


2

Pings from the internet are generally disabled by ISPs. Pings are ICMP messages, and therefore treated differently than regular traffic. The other possibility is that the pings are being blocked by your router, why not log into your router and look for a setting that says something about responding to pings/icmp packets. There are several ports that ...


2

Both dyndns and, for example, freedns work, but your testing method is invalid. You should specify that you want AAAA entry in the DNS request: $ dig -t AAAA vi.dyndns.org | egrep -v '^$|^;' vi.dyndns.org. 172680 IN AAAA 2001:0:53aa:64c:c5b:4f1e:a9c6:61b1 $ dig -t AAAA vi0oss.twilightparadox.com | egrep -v '^$|^;' vi0oss.twilightparadox.com. ...


2

Have you looked at the web-based services like logmein or gotomypc? I use logmein when I'm helping my dad and I believe they do have a product that might suit your needs.


2

The name www.mydomain.com/subdomain is not a subdomain. It is just a subfolder. A subdomain will be sub.mydomain.com. A new DNS record A record can be created for this subdomain and it can be pointed to a different server.


2

Or you could host your own. Use a free hosting company, and using PHP use a code like this: <?php echo $_SERVER['REMOTE_ADDR']; ?>


1

Good news - Dyn got back to me today and the answer is simple: rather than having the router update the IP for a "host" (e.g. example.dyndns.org) that the CNAME records point to, the router can just update the main A record (example.com) for the domain directly. My setup now is as follows: A record for example.com updated by the router CNAME records for ...


1

Sure it's possible. It's just redundant. And I can't be certain that a single Dynamic DNS provider would support it (you might have to use two, like noip.org and dyndns.org (I think they are organizationally different). What you end up with is two names pointing to the same IP. Since your router can only forward one port to one IP, it won't matter - if ...


1

Many of the issues can be ignored when using TeamViewer. The client only needs to start the program and report to you the ID (static) and password (temporary); the program takes care of bypassing NATs and offers remote desktop and file transfer. There's no alternative to SSH, but TeamViewer apparently also allows VPNing into the client's network. (I'm not ...


1

For VNC from the "client" side (that might be behind firewalls/routers etc) setting up a server at your end with listening is what I think you are looking for. Raymond cc has made a nice and good write-up on how to tdo that: http://www.raymond.cc/blog/archives/2007/04/05/free-and-easy-remote-access-with-vnc-reverse-connections/ For SSH revese connections ...



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