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PaulBoy

PaulBoy

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Two days ago my connection to the internet from my laptop stopped working - I have a desktop PC with a cable modem (NTL) which connects to my laptop via wireless & to a third desktop via ethernet cable - the third desktop will not access the internet either btw - when I log in on the desktop with the cable modem I CAN get on the internet so I presume there is something wrong with the network link between that PC & the other two (?) - Any suggestions on the best way to test what is wrong and/or resolve the problems (?) - Will I need to reinstall the network software (Linksys iirc) - My No2 son uses the desktop with the internet connection could he have done something to it to arse up the network (?)
Hope you can give me some pointers ... Paul :shake:
 
You say you have a cable modem (not a router?) connecting a single PC to th enet and the other machines share this connection. If this is correct I assume you are running ISS (Internet Sharing Service) and should look there.

As an aside, from a security point of view you are always better using a router rather than a cable modem.

Is your network an ad hoc network? (ie no domain). If so check how each machines IP is assigned. If your PC is the DHCP server a simple REPAIR command in "network connections" on each PC should reveal something.

HTH.

Gary.
 
has you antivirus or firewall auto updated itself recently or has windows??

I'm totally guessing you have a router as you mention linksys. Have you rebooted the router??
 
If you don't have a router then it sounds like a good excuse to get one. Makes life a lot easier and you don't need a particular PC turned on for others to use the net.
 
Thanks for looking in :thumbs: - To clear up any confusion I have an NTL Cable modem which connects to a big chunky cable run from the NTL junction box outside through my roof & into the cable modem - the cable modem then connects to a router via ethernet cable - the router has both wired & wireless points - my laptop connects via wireless & my third PC (a desktop) connects via ethernet - I have had all working together with no problems for over a year - I don't need the main PC to be on for the other two PC's to connect to the internet
I am not aware of any software downloads or updates which might have been done recently but as I am only one of three users anything is possible!
Will have a go at the Repair mentioned by HUN when I get home from work later ... Paul ;)
 
have you tried the simple things first. unplug the router and modem, leae them for one minute then plug the modem back in, wait 30 secs then plug the router back in, then restart all you machines.

it often works for me with my linksys kit :)
 
noah said:
have you tried the simple things first. unplug the router and modem, leae them for one minute then plug the modem back in, wait 30 secs then plug the router back in, then restart all you machines.

it often works for me with my linksys kit :)
Click to expand...

Yeah sorry I should have mentioned I have done the above which usually works when things lock up, but I tried dozens of times on Tuesday & it wasn't having any of it ... Paul ;)
 
Paul:

You said you have a router from your NTL modem, which means normally that this will also contain the DHCP server and firewall and everything else that us otherr have from a router connected to a normall BT line. On the pc that does connnect to the internet fine (assuming this is windows) go to start then run and type cmd - this will bring you up a DOS prompt (sorry if you already know what this is and how to do it) then type in ipconfig /all. You should get a a number of connection points (depending on whether this machine has wireless or ethernet) one of which will say local connection if ethernet or wireless connection and a number. The one you are looking for should have the following information:

DHCP Enabled - Yes
Autoconfiguration enabled - Yes
IpAddress - this should have something like 192.168.1.xxx (if 0.0.0.0 then connection isn't working or if starts 169 this is default windows IP and still isn't right) Hopefully whatever the number is jot it down.
Subnet Mask - 255.255.255.0
Default Gateway - Should be the IP address above except end ing in 1 (i.e 192.168.1.1)
DHCP Server - as above for Gateway
DNS Servers - there m,ay be one or many here but these are NTL's server addresses but you should have at least one.

Right now if you got that lot cos its working then the other machines should have the same except one will be local connection the other wireless as you've stated. If not then, especially if there is no IP Address, the DHCP Server has not recognised the connection and has not issued you an address or you have a hard coded address in there that is a different network perhaps. Check in Control Panel under network connections the connection type (local or wireless) and then its properties, then highlight the TCP/IP bit in the window there and properties again, make sure the radio button for obtain DNS and obtain IP are set to automatically and that the connection is enabled.

Do this first and then post back on here what you have found and we can go from there. Else PM me
 
I'd try pinging the router first up.

ping 192.168.1.1

if thats ok then i would try changing your DNS settings on individual machnes to

62.31.176.39
194.117.134.19
195.188.53.175

If you cant ping the the router then i would try resetting it rather tahn just switching on and off.
 
brummie said:
I'd try pinging the router first up.

ping 192.168.1.1

if thats ok then i would try changing your DNS settings on individual machnes to

62.31.176.39
194.117.134.19
195.188.53.175

If you cant ping the the router then i would try resetting it rather tahn just switching on and off.
Click to expand...

Thanks for your help brummie (& others) - I am online now at home - turned everything off again & started up & the network appears to be OK now :bonk: - I will quiz my sons later as to whether they did anything since I spoke to them yesterday evening but touch wood whatever was wrong seems to have rectified itself :embarrassed:
Paul ;)
 
its frustrating sometimes when thing just dont work anymore for no apperent reason
It be witchcraft i tell thee
stirthepot.gif
 
PaulBoy said:
Thanks for your help brummie (& others) - I am online now at home - turned everything off again & started up & the network appears to be OK now :bonk: - I will quiz my sons later as to whether they did anything since I spoke to them yesterday evening but touch wood whatever was wrong seems to have rectified itself :embarrassed:
Paul ;)
Click to expand...

Had lots of problems over the weekend with this again - what appears to happen is that whichever machine connects to the internet is the only one that is allowed to access the internet - as best I can work things out my Router (Linksys) is faulty - my eldest son is a computer geek & he has tried everything including a "factory reset" of the router & installing all the network from scratch - doing this gives the same result (one PC only can access the net) - before I head off to source another router (recommendations anyone?) am I barking up the right tree that the router is faulty or could it be my ISP (NTL) or other settings on my computer(s)
Confused of Surrey ... Paul :thinking:
 
First step is to do what nuffink described in post#8 and see what IP addresses your computers have. That will give a clue as to what is happening (with luck).
 
RobertP said:
First step is to do what nuffink described in post#8 and see what IP addresses your computers have. That will give a clue as to what is happening (with luck).
Click to expand...

Wilco Robert :thumbs: - It might be a few days before I can report back so if anyone has some more help to offer I'm not being rude :wave:
Paul
 
PaulBoy said:
Had lots of problems over the weekend with this again - what appears to happen is that whichever machine connects to the internet is the only one that is allowed to access the internet - as best I can work things out my Router (Linksys) is faulty - my eldest son is a computer geek & he has tried everything including a "factory reset" of the router & installing all the network from scratch - doing this gives the same result (one PC only can access the net) - before I head off to source another router (recommendations anyone?) am I barking up the right tree that the router is faulty or could it be my ISP (NTL) or other settings on my computer(s)
Confused of Surrey ... Paul :thinking:
Click to expand...

Paul

Check the individual IP addresses of all the machines in the way i described to ascertain they alkl got a seperate IP address and not the same one that they keep fighting over. Also look in the settings of the Router by going to a browser (IE or Firefox) and typing in the admin web page (normally 192.168.1.1/admin) check in the LAN and Wireless setup bit that there is a sufficient range of IUP addresses able to be issued. check that you also haven't got some sort of access list limit either that is a limited number of connections. Routers should not restrict by default any number of connections you would just get a degradated service the more there are connected thats all (bandwidth limits). Also check on the linksys websites for probelms and for firmware/software updates for the unit, I had a Linksys and it was the biggest crock of pants i ever used so changed it for a USR and now a Netgear, but to be fair routers don't normally cause this sort of hassle. Can you confirm the router make and model, i might be abler to dig something up??
 
nuffink said:
Paul

Check the individual IP addresses of all the machines in the way i described to ascertain they alkl got a seperate IP address and not the same one that they keep fighting over. Also look in the settings of the Router by going to a browser (IE or Firefox) and typing in the admin web page (normally 192.168.1.1/admin) check in the LAN and Wireless setup bit that there is a sufficient range of IUP addresses able to be issued. check that you also haven't got some sort of access list limit either that is a limited number of connections. Routers should not restrict by default any number of connections you would just get a degradated service the more there are connected thats all (bandwidth limits). Also check on the linksys websites for probelms and for firmware/software updates for the unit, I had a Linksys and it was the biggest crock of pants i ever used so changed it for a USR and now a Netgear, but to be fair routers don't normally cause this sort of hassle. Can you confirm the router make and model, i might be abler to dig something up??
Click to expand...

PM'd you nuffink - Router is a Linksys WRT54G Broadband Router - As you will see there are some strange numbers coming up on the ipconfig readout (IP Address starts 86. and not 192. as you mentioned - although the DNS Servers start with 194.) Anyway this makes little sense to me & I appreciate your help (& others)
Paul ;)
 
ip starting with 86. suggest your getting an external ip from the modem and thats the reason only one a can connect at a time.

The router is set up wrong!!

hold the reset button on the router in for 30 secs, release and switch off the power. leave for 10 secs and turn the power back on.

DNS sounds right
 
brummie said:
ip starting with 86. suggest your getting an external ip from the modem and thats the reason only one a can connect at a time.

The router is set up wrong!!

hold the reset button on the router in for 30 secs, release and switch off the power. leave for 10 secs and turn the power back on.

DNS sounds right
Click to expand...

brummie - my first post today mentions that we did that over the weekend & its still d!cking around - I am going to have a poke around NTL / Virgin to make sure they haven't done something their end to cause this - I have sent full details to nuffink & he/she is trying to assist also ... Paul ;)
 
only trying to help as most of the people who i know who reset their router thinks its a case of pressing the button and thats it. v.often not the case.
 
I remember seeing you had done a factory reset but i think Brummies point is still valid as you have to hold the button for an unreasonably long time or it does not work.
 
brummie said:
only trying to help as most of the people who i know who reset their router thinks its a case of pressing the button and thats it. v.often not the case.
Click to expand...

Sorry brummie my post above comes over a bit rude :embarrassed: It wasn't meant to be! My eldest is quite switched on ITwise & spent a few hours over the weekend trying to resolve this - I'd be happy to go with another router but wanted to check that the one I have was the culprit here before wasting money on a new one - the Virginmedia site is useless btw & I found JS on there (or elsewhere) to help ... Paul ;)
 
RobertP said:
I remember seeing you had done a factory reset but i think Brummies point is still valid as you have to hold the button for an unreasonably long time or it does not work.
Click to expand...

Cheers Robert - The Linksys I have needs the button holding in for 30secs & we sussed that - nuffink has given me some stuff to try but I'm getting more confused than ever :bonk:
Paul ;)
 
Thanks everyone (especially nuffink via PM) I finally got this sorted /crosses fingers toes legs etc/ ...
I was resetting the router when I noticed there was no ethernet cable going into the socket marked "Internet" - the ethernet from the cable modem was plugged into a network socket :bonk: - No2 son is suspected of this deed but denies it of course :shake: - probably kicked the lead out with his size 12's but at 6'7" I'm not going to push my luck or I'll get :bat: - Now I have all three PC's happily clogging up the interweb at the same time again & nice 192. / 194. readouts in the ipconfig ... Paul ;)
 
Funny how it takes all the hi tech effort to find a stupid problem. Been there done that!
 
well you know what they say,

99% of computer problems are between the screen and the chair :D
 
Yep I admit it I'm an ejit :bonk: - next time I'll lie & say I did something really clever to resolve such a problem :lol:
Paul ;)
 
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