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[aeon07]

hi
I have the 1.03 firmware version, but other issue related to remote access over the internet:

time by time, the router forget the admin password!
at 1-2 days, the admin password disappear and everybody can connect over the internet without password (only hit Enter or push Login button
all other settings are fine (pppoe auth, storage users, port forward, etc.. - nothing lost), only the admin password fly away, so I will exclude a hardware reset

this is the product
Product Page : DIR-645 Hardware Version : A1 Firmware Version : 1.03

[FurryNutz]

Link>Welcome!

What region are you located?
Has a Factory Reset been performed?

What browser are you using?
Try Opera or FF? If IE 8 or 9, set compatibility mode and test again.

When using a PW, try using 8-10 characters or less to test the admin PW.
Try this as well:
http://forums.dlink.com/index.php?topic=47055.0

[aeon07]

Europe

Factory reset.. I don't remember, I will do if it is necessary

should I use the button "Restore Factory Settings" from web interface (Tools- System) or the hardware button located on the router?
and after? Can I load the config file saved before reset or should I manually reconfigure all settings?

I am using Chrome, sometimes Maxthon (different computers); the password have 8 chars
the password was set up 3-4 times using both browsers, using remote access over internet or LAN access, different computers and the same thing, disappear after some time

at this moment is still in place, there are ~20 hours from last set up, I have the eyes on it

[FurryNutz]

Europe
I only show v1.02b11 as being available for the EU region. Where exactly did you get v1.03?

Factory reset.. I don't remember, I will do if it is necessary
If you updated, a factory reset is recommended both before and after sending FW files.

should I use the button "Restore Factory Settings" from web interface (Tools- System) or the hardware button located on the router? Yes use the routers UI or the button.

and after? Can I load the config file saved before reset or should I manually reconfigure all settings?
Depending on your FW version, it's recommended to set up the router from scratch after the last factory reset has been performed. Please follow this for all FW updates:FW Update Process

I am using Chrome, sometimes Maxthon (different computers); the password have 8 chars
the password was set up 3-4 times using both browsers, using remote access over internet or LAN access, different computers and the same thing, disappear after some time
Does this happend with using other browsers like FF or Opera?

at this moment is still in place, there are ~20 hours from last set up, I have the eyes on it

[jclarkw]

Europe
I only show v1.02b11 as being available for the EU region. Where exactly did you get v1.03?
...
Depending on your FW version, it's recommended to set up the router from scratch after the last factory reset has been performed. Please follow this for all FW updates:FW Update Process
...
Does this happend with using other browsers like FF or Opera?

OK, here's a similar problem from the east-central US with newly purchased DIR-645, H/W A1, F/W 1.03 (flashed from factory F/W 1.01 following instructions given this forum to avoid another security vulnerability).  Got everything set up and (apparently) working to my liking, and saved a configuration file.  (I can send it if you want to see it.)  Then, since I wasn't seeing all of the connected devices listed on the Setup/Network Settings page under Number of Dynamic DHCP Clients (and one was listed that I didn't recognize and that was not permitted on my MAC filtering list) -- the various lists of connections seem pretty flaky -- I decided to cycle power.  Immediately after power was restored I could not log on with my previously defined, strong, 15-character password: the password fields were now BLANK and NO PASSWORD WAS REQUIRED to log in!  Restored password to original and now logins are normal, but I haven't cycled power again.  Will try that later, when my wife lets me take the router down...

This is pretty scary if it repeats every power failure!

Has anyone else seen this issue? -- jclarkw

[FurryNutz]

Can you test with a 3 numerical combination then test with a 10 character number combination to see if this sticks. Then try using alphas only.

I'll test mine and see if I notice anything. The only thing I've notice recently is after restoring the saved configuration file and the router comes back to ready, the PW is blank and thus i'm thinking that the saved PW is not being saved correctly or not at all during the saving config to file operation. This might be a safe thing if a user forgets the PW, the configuration is still saved however the PW isn't thus allowing a safe fall back if the user forgets it. 

[FurryNutz]

I tested my 645 with v1.03 on my Mac Book today using only 3 numbers, then 15 all numbers, then 15 all alphas, then 15 mixed alphas and numbers together and doing a save and reboot from the UI, and powering OFF then BACK on. Each time I was able to log in using the PW that was saved. I did do a save config to file, factory reset then restore from that same saved config file and the PW was not what I had configured and was defaulted to blank. I presume this could be a safety feature for people whom might forget PWs that were initially set up in the router.

[jclarkw]

Can you test with a 3 numerical combination then test with a 10 character number combination to see if this sticks...

Well, I tried to reproduce the original problem with the **same** password after dinner and so far have been unable to do so.  (My existing password is as complex as I could make it -- 15 characters mixed upper and lower case letters, numbers, and special characters -- and I have not tried a simpler one since my original experimentation on how much complexity I could get away with, reported elsewhere.)  I went through five separate power cycles, unplugging the "wall wart" twice and shutting down the UPS that powers both the router and the cable modem three times, without a password glitch.  (During the middle of this process I saved another configuration file and studied various pages to see what connections were reported -- more below -- but I have never attempted to restore one of these configs as I don't really need them.)  No idea what was special about the one time that the DIR-645 lost its password, though I haven't controlled for connected devices or very much else...

I **really** appreciate your checking out your own system in parallel with my tests.  I guess we can hope that the original post resulted from loading F/W package that was incompatible with the H/W, as you suggested.  (I certainly hope D-Link issues a European version of F/W 1.03 soon and that aeon07 posts back with results from testing that!)  Anyhow, I'll watch for the problem on my end and post back if it repeats...

I noticed two anomalies during this testing:  1) Sometimes one of my Windows XP computers reported an IP address conflict after the router was powered back up, after which I logged off and on again to make sure it was straightened out.  2) I'm still noticing that the F/W reports flaky lists of connected devices.  There seem to be three places where such lists appear:  Status/Device Info, which appears to report mostly wired connections, Status/Wireless, which reports only wireless connections and Setup/Network Settings, which is very inconsistent about what it reports under "Number of Dynamic DHCP Clients."  Have you observed this?  If so I guess we just have to live with it and/or try some other tool like FING to see what's really on the network...

You continue to provide an invaluable service to the communtity (that one might wish were rivaled by D-Link's own tech support!).  Best Regards. -- jclarkw

[FurryNutz]

Setup DHCP reserved IP addresses for all devices ON the router. Setup/Networking. This ensures each devices gets its own IP address when turned on and connected, eliminates IP address conflicts and helps in troubleshooting.
Ensure devices are set to auto obtain an IP address.

Should resolve any conflicts...

[jclarkw]

Setup DHCP reserved IP addresses for all devices ON the router. Setup/Networking...

Good idea.  Thanks!

One last question slightly off topic:  What exactly does Tools/System/"Reboot the Device" do?  (I assume it leaves all the settings intact, since there's a separate button for "Restore Factory Defaults.") -- jclarkw

[FurryNutz]

Just reboots the router is all.

[jclarkw]

Just reboots the router is all.

Forgive me for being obtuse, but I don't know what this means or why it might be useful.  Equivalent to power cycling?  Renews all DHCP leases?  Re-connects with all devices and/or WAN?  All of the above?

[FurryNutz]

Reboots the router and just resets the connections. Does not loose any configurations.

[jclarkw]

Reboots the router and just resets the connections. Does not loose any configurations.

Perfect for de-allocating IP addresses of disconnected devices (cleaning up the DHCP table) and re-assigning free IP's to active devices.  Thanks!

P.S. -- This device seems pretty solid.  Still no password problems as of this morning... -- jclarkw

[FurryNutz]

Enjoy.