How do I configure ubuntu server's iptables to allow java without opening the floodgates?

Posted by rofls on Server Fault See other posts from Server Fault or by rofls
Published on 2012-12-02T06:01:33Z Indexed on 2012/12/02 11:08 UTC
Read the original article Hit count: 218

Filed under:

apache2

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ubuntu

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iptables

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java

I'm new to servers, so please bear with me. I have my amateur site running. Problem is, I followed Rackspace's instructions on setting up iptables and am pretty sure that's why the java server I'm trying to use on port 8080 isn't working (it runs the script but my android test app doesn't connect to it). When I try running the same java server script on port 80 it doesn't even start. I also ran nmap on my domain and saw that indeed only port 80 and 22 (for ssh) are responding.

Is it possible to run Java and apache happily on the same server? If so, how can I configure my iptables correctly. (I'm aware that I should probably do some sort of filtering in the java server itself, but will figure that out later).

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