Is iptables enough security, if port 80 is the only unblocked port and apache is setup correctly?

Posted by Josh on Server Fault See other posts from Server Fault or by Josh
Published on 2010-04-07T20:53:16Z Indexed on 2010/04/09 4:43 UTC
Read the original article Hit count: 388

Filed under:

security

|

firewall

We are using PHP,MySQL,SVN, and Apache. I want to know if I assume the local subnet trusted, and allow all ports on our subnet using iptables, then allow only port 80 as open to "anyone". If it is "good security" taking that the subnet is trusted as a premise. This is also assuming good PHP code etc, and that apache is configured correctly.

This is using CentOS 5.

© Server Fault or respective owner

Related posts about security

sudo apt-get update errors

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
Here is what I get on my terminal when running sudo apt-get update errors. I dont know if the issue is from my sources.list or my proxy setup(have not made any changes to proxies). Thank you for any help in advanced. Ign http://security.ubuntu.com oneiric-security Release.gpg Ign http://security… >>> More
The Security-Developer Gap: Why IT Security Can't Fix Your Security Problems Alone

as seen on Devx - Search for 'Devx'
Two well-known white hats explain how hackers take advantage of security holes left by enterprise application developers. >>> More
The Security-Developer Gap: Why IT Security Can't Fix Your Security Problems Alone

as seen on Internet.com - Search for 'Internet.com'
Two well-known white hats explain how hackers take advantage of security holes left by enterprise application developers. >>> More
StackOverFlowError while creating Mac object on AS400/Java

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello all, I am a newbie to AS400-Java programming. I am trying to create my first program to test the implementation of Message Authentication Code (MAC). I am trying to use the HMACSHA1 hash function. My (Java 1.4) program runs fine on a dev box (V5R4).But fails terribly on the QA box (V5R3). My… >>> More
Google App Engine - Spring Security Issue (java.security.AccessControlException)

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm currently getting the AccessControlException below when I deploy to app engine (I don't see it when I run in my local environment). I'm using GAE 1.3.1, Spring 3.0.1, and Spring Security 3.0.2. Any ideas how to get around this issue? It appears to be an issue with Spring Security trying to get… >>> More

Related posts about firewall

Managed hosting firewall vs managing own firewall

as seen on Server Fault - Search for 'Server Fault'
I posted on stackoverflow as to the overall benefits of managed hosting vs non-managed hosting. The more I think about it, it seems to boil down to one question: should I use a managed host because they take care of the firewall, or would I be okay managing my own, software firewall? The sites… >>> More
Hardware firewall vs VMWare firewall appliance

as seen on Server Fault - Search for 'Server Fault'
We have a debate in our office going on whether it's necessary to get a hardware firewall or set up a virtual one on our VMWare cluster. Our environment consists of 3 server nodes (16 cores w/ 64 GB RAM each) over 2x 1 GB switches w/ an iSCSI shared storage array. Assuming that we would be dedicating… >>> More
Firewall behind firewall

as seen on Server Fault - Search for 'Server Fault'
I've recently changed jobs and I've been set up with a new workstation. On all previous places where I've been working they've had some sort of local firewall installed on each and every workstation - but here I've been told not to activate it because it is not necessary since we're already behind… >>> More
We have no SW Firewall behind our office HW firewall, admin says its not req'd

as seen on Server Fault - Search for 'Server Fault'
I've recently changed jobs and I've been set up with a new workstation. On all previous places where I've been working they've had some sort of local firewall installed on each and every workstation - but here I've been told not to activate it because it is not necessary since we're already behind… >>> More
Can't get FTP to work on centOS 5.6

as seen on Server Fault - Search for 'Server Fault'
Hi guys I have been trying for a few hours to install and get FTP to work... I did yum install ftp and yum install vsftpd They all installed and are running but when I try to use filezilla or some other client I just can't connect....I've tried connecting on port 21 and port 990 ....nothing! These… >>> More