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Can't Ping Router But Have Internet


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#1 DarkWyz

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Posted 08 July 2008 - 06:33 PM

This was a odd issue I have been working on, and I think it may be the cause of other issues.

I am doing some tech work for a small office. There are 5 computers, a router, and a cable modem.

Three of the computers are laptops that work wirelessly and are running XP Media Center. There is a desktop machine in the front of the office as well, wired, running XP Media Center. Finally, a Windows XP Pro computer is acting as a server for backingup files onto.

The server also is wired into the router.


Now everyone can connect to the router, Everyone has internet connection, and on a good day, everyone can connect to the files being shared on the server computer.

None of the laptops can ping any other computer and can't ping the router, even though they are connected to it and have internet access. They also can't ping websites such as google.com, although it will resolve its IP before giving the usual Request Timed Out error.

The desktop and server computer can't ping the laptops, but can ping eachother and everything else fine.

I thought it may be an issue with the router and wireless settings, but I wired one of the laptops in and it couldn't ping anything still, except 127.0.0.1

Also, if I try to ping the server by name, I get:
Ping request could not find host WealthWT. Please check the name and try again.


When I tried to connect one of the laptops directly to the cable modem, instead of the router, I can't get internet at all on the laptop. This with unplugging and plugging the cable modem back in and running ipconfig /release and /renew.

No internet connection, and still no pinging sites.

When I wire the Xp Pro computer acting as the server, directly into the server, and after removing static IP and release and renew, I can get internet on the server.

Only the server has static IP set, and it works fine with or without it set, it is static only because I was hoping it would make the connection from the laptops to the server more reliable.

Also, none of the computers have Windows Firewall enabled.

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#2 DarkWyz

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Posted 10 July 2008 - 02:57 PM

Guess no one has any ideas

#3 nigglesnush85

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Posted 10 July 2008 - 04:51 PM

Hello DarkWyz,

That is quite strange. What other firewalls do the systems have? you say you have turned windows firewall off.

You could try going to command prompt. (start, run, cmd)

Type ipconfig in the prompt and press enter. repeat this on all the systems and take note of the information.

The IP on each system should be different on each system.
The Subnet mask needs to be the same
The default gateway on the systems should be the same.
Regards,

Alan.

#4 raw

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Posted 10 July 2008 - 06:44 PM

Need some more info.
What brand/model router are you using?
As nigglesnush85 said use "ipconfig" and give us the IP and subnet of
the machines. ( I don't need your public IP, just the local ones. They should be 192.168's or 10.10's)
Does your router assign the IP's automatically?
Is the static IP of the server outside the range of the DHCP pool?

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#5 DarkWyz

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Posted 16 July 2008 - 08:26 AM

I appologize, I've been out of the office for a few days...
Here is some specs info I gathered:
Make and exact model of the broadband modem. Motorola SB5120
Make and exact model and hardware version of the router (if a separate unit). Motorola WR850G
If wireless, encryption used, (none, WEP, WPA, or WPA2) WPA-PSK
Make and model of your computer. HP Pavilion dv5000
Version and patch level of Windows on all affected machines, i.e. XP-Home (or XP-Pro), SP1-SP2, Vista, etc. Windows Media Center SP3

I will get the info on ipconfig as soon as the rest get into the office

Edited by DarkWyz, 16 July 2008 - 08:30 AM.


#6 DarkWyz

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Posted 16 July 2008 - 10:20 AM

did not realize that the AV installed on these machines had their own Firewall.

Seems like quite the sad little overlook on my part, but disabling this firewall has allowed ping requests to complete successfully.

Thanks for the help!

:-D

#7 nigglesnush85

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Posted 16 July 2008 - 01:32 PM

No problem, glad to help. Just out of curiosity, what firewall was causing the problem?
Regards,

Alan.

#8 DarkWyz

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Posted 17 July 2008 - 09:03 AM

Trend-Micro, it also seemed to be the cause of some other issues aswell.

#9 nigglesnush85

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Posted 17 July 2008 - 09:09 AM

That is strange, if you are looking for a replacement, I would recommend Comodo
Regards,

Alan.




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