how do I access my DVR from outside my local network and mostly from mobile phone?

If it used to work but doesn't know then it usually means one of:

• Your hostname doesn't resolve to your current WAN IP
• Your DVR has a dynamic IP on your LAN and it's IP changed

Edit

Since I managed to get the message SUCCESS, that means that dyndns sends me to server / router, but I cannot be forwarded to dvr, correct? But I have made port forward for all ports...

It means that your DynDNS hostname resolves to an IP with something listening on that port. It probably means a problem with your port forwarding or DVR configuration.

The DVR should have a netmask of 255.255.255.0 and the default gateway should be 192.168.1.1.

If you don't have Dynamic DNS Pro then you can't use www.thesimou.dyndns.org, but only thesimou.dyndns.org. Try using http://thesimou.dyndns.org:8000/ instead (hint, that works for me).

YES, that one day that I could see my dvr I used from mobile url: http://thesimou.dyndns.org. I had already tried what you suggest but it is not working... Beleive me when I say I try every possible connection combination every day... (with or without http, with or without www, with or without :8000, nothing works) So, I was wondering, what If I buy Dynamic DNS Pro and still cannot manage the view???

It worked for me when I posted, though not right now. This suggests that your update client isn't behaving correctly, or you have a connectivity issue.

Remember to test:

• From outside your network
• From another computer
• Not from a work environment
• Not from a public network
• From a friend's house

Edit

Works again for me right now.

It seems you already worked through that guide, because you're providing the information being asked for from there. Very good!

downloaded dyndns-updater and put information on DVR.

That could mean that you now have two update clients running, the one in your DVR and the software client. Never ever run more than one Update Client against a hostname, else it will soon be blocked due to abusive updates! Run either the one or the other, whatever works best and is most convenient for you.

First day, mobile view was fine. Next day and days after connect to server failed. I made no changes.

That may be the problem, not making changes! Your IP address may have changed, and your two(?) Update Clients did not work as supposed for whatever reason. Check at the website if your hostname was updated with the correct IP address. If needed, update it manually there, and check the one Update Client which should be running that it does its job right.

Your hostname currently resolves as follows:

 nslookup http://thesimou.dyndns.org. Server: localhost Address: 127.0.0.1 

 Nicht autorisierte Antwort: Name: http://thesimou.dyndns.org Address: 94.68.150.167

But 94.68.150.167 doesn't seem to be your current IP address, because none of the mentioned ports are open,
e.g. from the Open Port tool:
An attempted connection to thesimou.dyndns.org:8000 timed out. This typically indicates that traffic to that port is being actively blocked by either a firewall or your ISP.

I didn't use the default gateway. I used the gateway 192.168.1.1 which is the LAN IP of the router).

Yes, this 192.168.1.1 is what you should configure as default gateway in the DVR as well. No idea where this bogus IP address 080.106.108.038 could be coming from.

The WAN IP address of the ISP connected device (modem or router) (as shown in the modem or router's management pages, not what any web site shows): 194.168.150.167

Hmm, this IP address is strangely related to the IP address your hostname resolves to in no way... Something is going wrong... Or is this a typo and you actually saw 192.168.150.167 instead???

Visit http://rotblitz.byethost7.com/client.php and see what IP addresses are returned as REMOTE_ADDR and as HTTP_X_FORWARDED_FOR. They should be the same, and also the same as shown on your router's status page, and again the same your hostname resolves to.

(but I used LAN IP of the router)

Hmm, what did you use the LAN IP address of the router for? You should use this as "default gateway" and as "DNS server" on all your devices in your LAN only, not for anything outside your LAN, e.g. not for your DynDNS hostname.

Windows XP (patch level??? what is this?)

This is e.g. the latest service pack you're using, which is SP 3 for Windows XP. And also if you have the latest MS hotfix updates installed or not.

I checked the OPEN PORT TOOL you suggested. I have seen it before but I didn't understand what to do with it... What should I do?

You enter your hostname or public IP address there and one of your port numbers at a time to check if it is open and can be reached from outside. Don't be confused about the samples they give, just use your real port numbers, no matter how many digits they have.

Typing mistake... It is the same...

No, 194.168.150.167 or 192.168.150.167 is not the same as 94.68.150.167 (or 94.68.179.63 in between). Or what do you want to express here?

How do I check what is happening?

Well, the Open Port Tool now shows a better result:
thesimou.dyndns.org:8000 is open and accepting connections. This indicates the port is not being blocked by either a firewall or your ISP and is currently operational.

You should be good to go. You can only use Internet Explorer to use your device.

Well, here is what is going on now...

You said you could see me, then you could not and then again you could... You said that might be a problem with the updater... I downloaded the dyndns updater and I checked it with the routers page... Every time I checked it is ok.

My mobile app has four fields that need to be filled: these are: address: I tried dyndns and wan ip with or without http port port: I tried mobile port and http port username and password. Every time I get message CONNECTION FAILED. BUT, I tried dyndns hostname WITHOUT :8000 in the address field and I tried http port 8000 in the port field instead of mobile port and... THERE! I get CONNECT TO SERVER SUCCESS!!!

but then, screen is black and I get message NO RESPONSE :(

Any ideas? should I change the mobile port to DVR menu and make it the same with the http port? should I do something with the dyndns account?

Since I managed to get the message SUCCESS, that means that dyndns sends me to server / router, but I cannot be forwarded to dvr, correct? But I have made port forward for all ports...

Any ideas?