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Old 03-11-2003, 05:36 PM   #1
Registered: Jan 2003
Location: Long Island
Posts: 72

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Apache and no

Im trying to set up a webserver with dymanic ip. Im using no ip to keep it updated. here is the problem. On the linux machine i can get to my webpage by the localloop. though the ip of my internet and the name of my website.

But when i try to go on the internet from a totally different computer to get to my website i get no page found.

anyone have any ideas why?

anybody point me in the right direction?
Old 03-11-2003, 06:09 PM   #2
Registered: Dec 2001
Location: Stow, OH
Distribution: Slackware 10
Posts: 73

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You'll first want to make sure you're not blocking port 80 on your firewall - probably iptables or ipchains.

You'll also want to try connecting to the machine using its external IP address (i.e. instead of the fully qualified host name (i.e. If that works then you've got a DNS issue which should be easy to resolve.

You can check the DNS entry using nslookup or dig. Make sure the IP address is correct.

That should be enough to get you started.


Last edited by KeithKessler; 03-11-2003 at 06:10 PM.
Old 03-11-2003, 10:54 PM   #3
Registered: Jan 2003
Location: Long Island
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I can get to the page by putting in the ip address.

I have a cable modem do they usually block port 80 on them?
Old 03-11-2003, 11:18 PM   #4
Registered: Aug 2002
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If you can get to the webpage by the IP address assigned by the ISP from another PC on the internet then the problem most likely is the noip updater program. Make sure its running and you entered the correct information. Blocking port 80 depends on the ISP.
Old 03-11-2003, 11:33 PM   #5
Registered: Jan 2003
Location: Long Island
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no i cant get to it from an outside pc. only on the webserver it comes up.

how do i check if port 80 is blocked?
Old 03-12-2003, 05:09 PM   #6
Registered: Mar 2003
Location: Scotland
Distribution: Slackware, RedHat, Debian
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Try a traceroute to your ip from an external source first to make sure you PC is visable at all (ie connected)

To see if a port is blocked use "nmap" on a linux box or "ipscan" ( on windows.

To check the firewall on your linux box:
1) login as root
2) type "lokkit"
3) set to "no firewall"
4) OK
5) Test

You should run lokkit again to re-enable your firewall (select the customise option and allow only the desired services)

Hope this helps



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