mozilla.org problems?

For the last few days I've been unable to reach www.mozilla.org but I can't quite figure out what the problem is.

My ISP (ADSL) has been playing up quite a bit recently - a lot of "timed out when connecting" errors and some DNS problems but it's generally only bad during the working day so I assume it's a load issue.

At the weekend it seems fine. However, mozilla.org just isn't responding. When I hit www.mozilla.org I just get a blank page. If I try with IE6 I get a "page cannot be found" error. I also notice that the "Get Firebird" button at the bottom of each page here isn't appearing.

If I ping www.mozilla.org it seems fine though:

Code:

Pinging rheet.mozilla.org [207.126.111.202] with 32 bytes of data:

Reply from 207.126.111.202: bytes=32 time=190ms TTL=240
Reply from 207.126.111.202: bytes=32 time=191ms TTL=240
Reply from 207.126.111.202: bytes=32 time=190ms TTL=240
Reply from 207.126.111.202: bytes=32 time=191ms TTL=240

Ping statistics for 207.126.111.202:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 190ms, Maximum = 191ms, Average = 190ms

But oddly, if I ftp to ftp.mozilla.org I get a site that has nothing to do with Mozilla (apparently). The welcome message (and the content) tell me I've reach Oregon State University which is supposed to be at ftp.oregonstate.edu ! Just tried it again and this time I did get the proper ftp.mozilla.org .

Something very strange going on. Might have to call my ISP to see if they're aware of any DNS issues they're having.

Michael.

 

Yeah its fine at my end. I often get this when certain sites won't load up on my connection but I know they are working fine.

What I did when I had it is changed the DNS address on my internet settings. Instead of linking to my router (10.0.0.2 local) I used BT's direct DNS address and the sites I was having problems with work fine.

I am not sure if it was strictly legal though but over at adslguide.org they said it was fine.

 

What do you get if you ping www.mozilla.org (from a command prompt)?

Michael.

 

quite a poor response.

 

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Ian>ping mozilla.org

Pinging mozilla.org [207.126.111.202] with 32 bytes of data:

Reply from 207.126.111.202: bytes=32 time=163ms TTL=237
Reply from 207.126.111.202: bytes=32 time=163ms TTL=237
Reply from 207.126.111.202: bytes=32 time=163ms TTL=237
Reply from 207.126.111.202: bytes=32 time=162ms TTL=237

Ping statistics for 207.126.111.202:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 162ms, Maximum = 163ms, Average = 162ms

Thats on a 512kbps connection.

 

You think, remember each time a packet passes through a router it's response time increases.

I'd say that's not too bad a ping time.

Do a tracert www.mozilla.org, it's 20 hops for me.

 

Most odd. So the IP address I'm getting for www.mozilla.org is correct and I can ping it no problem but I can't send/receive HTTP from it

Also odd is that tracert doesn't work with anything - not even www.zerogain.com which I can access perfectly well. Usually I have no problems.

Even odder is that DNS seems to be working fine (for most things at least) but if I try to ping either of my ISP's DNS servers (by IP address or name) I get "request timed out". I can run nslookup on them though.

Curiouser and curiouser...I think I'll have to give their support line a call

Michael.

 

Mr Rock
I get 25 hops to BBC.CO.Uk

turnaround is < 10ms

 

OK - starting to get somewhere. It's an issue with my router but what I have no idea. If I connect my ADSL modem direct to my PC then I don't have any issues. mozilla.org works fine and I can tracert etc. to anywhere I like.

Go via the router though and I have the problems. It's most odd that, of the sites that I regularly visit only mozilla.org should have the problem.

Once SWMBO has finished reading my e-mails I'll see if a router reset does the trick. If it doesn't it wouldn't be the first bit of Linksys kit that's broken down on me. I had a Linksys wireless access point which one day after a power cut simply stopped working (once the power was restored of course ).

I hope that my ISP isn't doing something sneaky to prevent people using routers with their ADSL accounts. Does anyone know if this is even possible and/or if anyone's tried doing it?

Michael.

 

visit adslguide.co.uk/or org I can't remember they told me exactly how to solve the problem.

How is your router setup is it DHCP or do you have it setup manualy. If so change the DNS to your ISPs rather than your router. This worked for me.

Also this may sound a little bit stupid but I find if I get total DNS errors where no sites work just restarting the router cures the problem.

I can't see the ISPs doing anything to stop people using routers but then it may be different over there. I know it says no where on my contract that says you cannot use routers. It just says you cannot have more than one connection, however you can only have one connection anyway, i.e the router.

 

I often have to reset my router when things like that happen.

 

Do you mean like a proper firmware reset? Luckily I've never had to this yet.

My router seems to have been very reliable considering it only cost me £40 and has a built in ADSL modem.

 

If you can ping a URL then DNS is working because it has successfully translated the URL to a IP address. If your DNS was screwed it would tell you it either couldn't find the host or that the request timed out.

Normally if you can ping a URL but not get to the page in IE it means IP is fine but IE is corrupt or sulking in some way.

Can you get to the site by sticking http://207.126.111.202 into IE's address bar?

Tony.

 

And how many of the hops are internal to your ISP

 

Try typing the following from a command prompt :-

telnet 207.126.111.202 80 <ret>

qwerty <ret> <ret>

If you get something like the following then your ADSL router is allowing port 80 through :-

HTTP/1.1 400 Bad Request
Server: Netscape-Enterprise/3.6 SP2

Your browser sent a message this server could not understand.

Connection to host lost.

 

Tried a router reset (the full "hold down the button for 30 seconds" monty) and after reconfiguring it again from scratch...no joy

SgtRock - great suggestion about using telnet to simulate a browser, didn't occur to me - doh!

So - I tried simluating several valid GET requests to various hosts that work for me and got the expected responses. Tried a valid GET request to www.mozilla.org and there's just no response - in fact, telnet just bombs out without even so much as a "connection to host lost"

If I try sending junk to port 80 I do get the "Invliad HTTP request" status code 400 response though.

I can rule out all browser and/or firewall (ZoneAlarm) issues as everything works fine without the router in the loop.

The other odd thing is that I can run tracert perfectly fine when I'm not using the router but with the router in the loop it just times out to every host (except for ones on my LAN).

Michael.

 

It sounds like your router is blocking ICMP, ping and traceroute uses it, but is odd that you could ping earlier

 

Just found this thread on a forum/site that looks like it has a lot of useful info.

I had suspected a potential MTU issue but will look into it more. So far nothing I've changed has fixed it.

I can ping (outgoing) but even if I enabled incoming ICMP in ZoneAlarm my machine is un-pingable from the outside world.

Seems I'm not the only one with the problem:

http://www.dslreports.com/forum/remark,8262891~mode=flat?hilite=tracert

Will investigate a firmware downgrade. One thing's for sure - I'm never buying another Linksys product again

Michael.

 

OK - firmware downgrade has fixed the tracert issue but the other problem still exists (can't connect to certain sites) so I guess the two were unrelated

Michael.

 

My router has been up for more than 58 days. And only that short a time because something tripped the house electrics....

Sorry not to be helpful, getting a 400 from garbage but nothing from a valid request is very odd. Does the router logging allow tje contents of all packets to be recorded?

Paul