Help with iptables on proxy server


 
Thread Tools Search this Thread
Special Forums Cybersecurity Help with iptables on proxy server
# 1  
Old 03-25-2009
Help with iptables on proxy server

I may be doing this incorrectly, so if you have any suggestions, I'm open to it. So I installed a reverse proxy server on my LAN. It's not on the DMZ because it's coming from a blade running inside a virtual machine. Anyways, so I installed iptables and locked everything down from the outside coming in. Only port 80 is open from the outside. My question is, what if someone compromised the box in any way, I want to deny them access to our local lan. However, just thinking about this, if someone got in through SSH or something they could just disable iptables, no?

I was thinking of denying traffic from the proxy to our LAN but is that irrelevant? I still need my LAN to talk to the proxy server since our back-end webservers need to communicate w/ this proxy server.
# 2  
Old 04-09-2009
Quote:
Originally Posted by sdotsen
I may be doing this incorrectly, so if you have any suggestions, I'm open to it. So I installed a reverse proxy server on my LAN. It's not on the DMZ because it's coming from a blade running inside a virtual machine. Anyways, so I installed iptables and locked everything down from the outside coming in. Only port 80 is open from the outside. My question is, what if someone compromised the box in any way, I want to deny them access to our local lan. However, just thinking about this, if someone got in through SSH or something they could just disable iptables, no?

I was thinking of denying traffic from the proxy to our LAN but is that irrelevant? I still need my LAN to talk to the proxy server since our back-end webservers need to communicate w/ this proxy server.
Can you please upload a diagram of your network?

Frankly speaking, I am happy to respond, but lazy to translate your text description into a picture. I need a visual.

Thanks.
Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

enable all operations to use a proxy server , redhat server

Hi, i would like to enable all operations/connections to use a proxy server in a redhat server , witch file should i config to get this for all conections .... Thanks (0 Replies)
Discussion started by: prpkrk
0 Replies

2. Shell Programming and Scripting

proxy server using perl

I want to write a perl script on a server to behave like a proxy server. I want to be able to enter the hostname and port on firefox proxy settings (or IE, chrome, whatever) and then go to a site, and have my webserver forward the request to another server, and forward the response back to the... (2 Replies)
Discussion started by: Arun_Linux
2 Replies

3. IP Networking

SQUID Proxy server configuration

Can any one direct me to the resources where I can find in-depth instructions on Squid Proxy server and its configuration? Thanks in advance.:) (1 Reply)
Discussion started by: admin_xor
1 Replies

4. IP Networking

Software/tool to route an IP packet to proxy server and capture the Proxy reply as an

Hi, I am involved in a project on Debian. One of my requirement is to route an IP packet in my application to a proxy server and receive the reply from the proxy server as an IP packet. My application handles data at the IP frame level. My application creates an IP packet(with all the necessary... (0 Replies)
Discussion started by: Rajesh_BK
0 Replies

5. Red Hat

How to get server out through work proxy

Hi, I want to be able to get my server to update via yum through our work proxy. I have tried the usual method of exporting the http_proxy=http://username:password@domain.com but this does not work for me. I opce heard about a guy who set up a proxy on his XP laptop (Don't flame me I have... (0 Replies)
Discussion started by: pobman
0 Replies

6. Shell Programming and Scripting

Proxy server/client in Perl

I have been toying with a Proxy client/server app that will listen on the CLIENT system on lets say port 7070. User's browser proxy setting is configured for "localhost" port "7070". When this proxy app gets a request for a URL it should FETCH the URL and display it on the browser. I... (1 Reply)
Discussion started by: Dabheeruz
1 Replies

7. UNIX for Dummies Questions & Answers

Proxy server on Digital UNIX V4.0E ?

Hello everyone, im searching an proxy server for Digital UNIX V4.0E... someone got an idea ? (pre-compiled package would be the best :p) (0 Replies)
Discussion started by: alvoryx
0 Replies

8. Linux

how to get IP for proxy server

i have installed a proxy server on my linux box . how to get the IP for that proxy . cheers (3 Replies)
Discussion started by: ppass
3 Replies

9. UNIX for Dummies Questions & Answers

unix server behind MS proxy server

I'm trying to get a Unix server on the internet (mostly for DNS requests) but this server is on a network behind a Proxy server. How can I configure my unix server that he will pass the proxy server for internet requests? (2 Replies)
Discussion started by: RSlegers
2 Replies

10. IP Networking

routing through a proxy server

I'm new to this forum, so please be gentle ! I need to get my IBM RS running AIX4.3 onto the internet to a particular ftp server, through a NT server running proxy services. This NT server is directly connected to our internet router vis a secondary NIC on the NT server. When I add the route... (2 Replies)
Discussion started by: garry
2 Replies
Login or Register to Ask a Question

Featured Tech Videos