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Cannot browse the internet but I can browse network resources.

Posted on 2006-04-24
Medium Priority
Last Modified: 2013-12-07

I can access network resources and any web applications that are hosted by my company but when I try and browse the internet I cannot get to any external web sites.

I cannot ping any external websites but I can ping internal resources like another computer on the network with no problems.

Any help would be greatly appreciated.

Question by:rorybrady
LVL 15

Expert Comment

ID: 16529795
do an IP config/all from the command prompt and tell us what you see for the default gateway - compare it to the results of another PC.  your router/firewall should be the address listed in default gateway.

also, check to make sure you have the correct DNS information as well.

LVL 79

Expert Comment

ID: 16529832
Are you connecting to your company over a VPN ?
If yes, what kind of VPN client? Cisco IPSEC? Microsoft PPTP?
LVL 20

Expert Comment

ID: 16529984
its sound like you are using vpn. if you are your admin might have disable internet browsing...We have that at my work so if people are dailing in from home they can access the shares but internet is block. again this is for security porpuses. but if you are the admin then post back and we'll help you
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This technical paper will help you implement VMware’s VM encryption as well as implement Veeam encryption which together will achieve the nothing ever in the clear goal. If a bad guy steals VMs, backups or traffic they get nothing.

LVL 78

Expert Comment

by:Rob Williams
ID: 16530328
It may be a DNS issue. Can you connect to (Goggle): 
If you can then DNS is not configured correctly on your computer and/or server.

Expert Comment

ID: 16530436
Simple, ask your Admin. Seems like youre not the Admin of the System.
LVL 10

Expert Comment

ID: 16530663
do a "tracert" or "pathping" to an external location to see where it dies. That will tell you the culprit. Most likely port 80 is disabled at your company's firewall (either for you or for all employees).
LVL 44

Expert Comment

ID: 16531101
In the TCP/IP configuration setup, you need to specify 2 DNS servers, these are at the bottom of the list, and if you find out who the ISP is, you can use their DNS servers, something like and .1.
Enter those in, reboot, and you should be in business.
LVL 18

Expert Comment

by:Sam Panwar
ID: 16531192

Please check the followings:
Internal and external both network diffrent so please check the following:

1. Please check the gateway ip address have put it or not in Lan setting.
2. If you are sing proxy or the any firewall then try this.
3. I think this is not dns issue but also check the DNS entries of the gateway and your computer
4. You can also try with open any website from the IP address.
5. I think the mostly problem is your gateway computer so please check its route your network traffic or not so please check the configuration of the gateway.

LVL 17

Expert Comment

by:Dushan De Silva
ID: 16532762
1.) Set your Defaultgateway correctly.
2.) Check for ant firewall/ Spyware issue on your machine.
3.) Check for any firewall,IpMapping(iptables)..,etc on the Gateway for your machine.

BR Dushan

Expert Comment

ID: 16533113
Open Inetrnet Explorer & go to Options in the Tools.In that go to Connetion--> lan settings & use proxy server Tick that & say By pass Proxy Proxy seetings.This will bring u Browse Internet without using ur web applications that are hosted locally...If u want the ping then ur DNs must be wrong.Just add the DNs server Ip or just check whether the DNS ip is Correct......This may Help U.....Check with the Gateway settings aslo which is used to surf the NET Process.  

Expert Comment

ID: 16534695
The internet gateway may have been configured to only accept connection from a proxy. You need to find out the name or IP address of the proxy and configure that proxy in Internet Explorer, under Tools -> connection -> lan settings.

This is just guessing though.
Follow Makana's advice and talk to your network administrator.

Expert Comment

ID: 16542598
it depends on the medium through which u r trying to connect to internet most of the companies connect thorugh a proxy server & for that u have to mention a proxy server address in ur browser if there is a router than give its ip address in ur default gateway of ip address configuration all of these are sugesstion ask ur network administrator

Author Comment

ID: 16563158
Hello everyone, sorry I have not replyied until now. We recently upgraded our exchange server to servicie pac 2 and all of my email from experts-exchange was getting filtered into my junkmail folder.

I figured out the problem. We have a maximum of 50 IP address reserved for this office. All these address had been used up so when this computer was trying to get out onto the internet there were no address available. I reset this on our firebox and everything started working again.

Thanks for all of your suggestions.


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