how to request the proper URL with an Apache Server.

Posted on 2003-03-18
Medium Priority
Last Modified: 2010-03-04
Hi everyone:

I am running jakarta-tomcat-4.0.6 with Java j2sdk1.4.1_02 (does anyone know of any problems with this config?) and when I place the following URL:


it works and it even works when I specify the IP given to me by the server (DHCP) 

now, if i get out of the LAN and adquire an IP given to me by the ISP like 
it does not work any more ???

Do i have to open the 8080 port ??
What is the right way to specify the URL ???

An example of the exact way to write the URL will help lots,



Question by:chrome2000
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Expert Comment

ID: 8163013
Your ISP may be blocking access to the ip address. Try going to your server using http://localhost:8080/myDir/myJSPPage.jsp on the local machine. If this works, it means that you server is working. Check with your ISP to see what their policies are about accessing addresses in their domain.

Author Comment

ID: 8163132
thanks valleydesi:

that makes sense but my ISP which is a recognized provider in the area where i live claims that i can host your own webserver and use their service to access it and as i wrote early:


it works and it even works when I specify the local IP given to me by the win server (DHCP) 

now, if i get out of the LAN and adquire an IP given to me by the ISP like 

it does not work any more ???

LVL 51

Expert Comment

ID: 8165336
most likely a firewall or routing problem.
Either you have no NAT/MASQuerading, or the ports are blocked.

Best to check is that you start:
   tcpdump -l -n -i eth0 port 8080
on your tomcat server, then try to connect from outside and check if packets arrive (assuming that eth0 is the NIC bound to the posted IPs):

Author Comment

ID: 8168351
thanks for your info ahoffman but your knowledge is way over my head.

here is my configuration

telephone line --> DSL modem --> K5 --> switch (two get two IPs) --> K5 ---> into my NIC.

Here is the thing. Few days ago I was still inside a LAN where I was given an IP by the Win 2000 Server(DHCP). Now I register the "mak" address of my NIC with the ISP so that I can get with the help of the switch my own IP and host my own webserver. The fact is that I get a new IP but for some reason I can not access the Internet even when I removed the proxy settings (required in the old network). Also I can not access my pages. The configuration is OK because I tried at home the same one and it works fine. FYI I am running Win 2000 Pro, tomcat , jdk, mysql. I think that the commands that you typed for me are unix commands right ???? How can I open port 8080 ?? How can i change the default settings of tomcat for the port 8080 ??

thank you and anyone else who want to help for your time,

LVL 51

Accepted Solution

ahoffmann earned 150 total points
ID: 8172364
for shure there is no problem connecting from within the same LAN, usually.

I'm confused about you network topology, and wher which server and/or browser is started.

Please post following results from the PC running your server ** and from the PC you try to cennect to the server with your browser (start commands in your cmd.exe):

   ipconfig -all
   netstat -rn


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