AWG Blogs

  • Coding without IF statements - Found below linked article that provides tips on how to avoid using IF statements, with one of the benefits being readability. The tips largely are based o...
    1 day ago
  • Microservices - A species would be a combination of roles [DCI?], instead of being characterized as an animal, which would not necessarily be the best description. At a ...
    2 weeks ago
  • CoR compared to Pipe and Filter - Java World implies the pipes-and-filters architectural style described by Parnas Software systems often employ the equivalent of pipes (e.g., email filter...
    7 months ago
  • Getting ADB Working for SPH-M840 - Had a SPH-M840 Galaxy Ring Virgin Mobile 3G Android version 4.1.2, attempting to install apps from Android Studio failed to detect device. Installed SAMSUN...
    1 year ago
  • How to check if I have write permissions to an Oracle table - SELECT CASE WHEN COUNT(*) > 0 THEN 'YES' ELSE 'NO' END AS PERMISSIONS FROM ( SELECT privilege FROM ( select * from dba_tab_privs where (grantee = 'MY_USE...
    1 year ago
  • Flyweight vs Singleton - Implementations seems to be virtually identical, differing only in style, where the flyweight object is created and held by associated objects (containers:...
    2 years ago
  • init-param vs context-param - see http://javahash.com/difference-between-servlet-init-and-context-parameter/ for background. Gist: context-param variables are global and accessible thro...
    2 years ago
  • rbenv vs RVM - RVM is responsible not only for changing Ruby versions, but for installing rubies and managing gemsets, as well. ...Along with rbenv [to manage ruby versi...
    2 years ago

Friday, April 2, 2010

Virtual Host in Tomcat and NAT

Well, I didn't figure out how to separate the apps by port, but I did learn that it's possible to do so by IP -- by setting the name attribute in the Host tag of server.xml.

The problem appeared however when I attempted to port forward port 80 to the second host entry in the m0n0wall NAT configuration. Browsing to the site from outside the firewall kept bringing me back to the first host entry which by default was set to localhost. That will never do, because I don't want external users seeing the Tomcat management page or welcome page for that matter. That was the whole point of creating a separate app in a separate location on the hard drive (which was done by the way via setting the docBase attribute of the Context tag which goes under the Host tag. I was creating an Open Blue Dragon or openbd application and I didn't want it sitting under the default webapps virtual host.

I solved the problem by simply setting my new app, the second host in server.xml, to localhost, and assigning the default app a second IP (from a second NIC) for management purposes. I'm not sure why or how, but this fixed the problem. I can now access my ColdFusion web app from outside the firewall through port forwarding. And the managment app is only visible from the server itself.

No comments:

Post a Comment