Linux - SecurityThis forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.
Notices
Welcome to LinuxQuestions.org, a friendly and active Linux Community.
You are currently viewing LQ as a guest. By joining our community you will have the ability to post topics, receive our newsletter, use the advanced search, subscribe to threads and access many other special features. Registration is quick, simple and absolutely free. Join our community today!
Note that registered members see fewer ads, and ContentLink is completely disabled once you log in.
If you have any problems with the registration process or your account login, please contact us. If you need to reset your password, click here.
Having a problem logging in? Please visit this page to clear all LQ-related cookies.
Get a virtual cloud desktop with the Linux distro that you want in less than five minutes with Shells! With over 10 pre-installed distros to choose from, the worry-free installation life is here! Whether you are a digital nomad or just looking for flexibility, Shells can put your Linux machine on the device that you want to use.
Exclusive for LQ members, get up to 45% off per month. Click here for more info.
installed firestarter, used the wizard for configuration. Are the defaults a sufficient firewall, or would I need to change the configuration. This is running on Debian Sarge, home desktop, single user, on a dial out connection
The defaults were:
disable public access to all areas
disable TOS filtering
disable ICMP filtering
For your situation, those defaults are reasonably ok. I would recommend performing a nmap scan or using one of those free scans available on the internet (grc.com and sygate are two) and verifying that you have the proper ports closed/filtered. Some people will recommend performing icmp filtering, but technically blocking icmp traffic breaks RFC guidelines. Definitely DO NOT want public access to all areas.
Hey thanks Capt_Caveman for the info, went to GRC.com and ran their test, 1 failure (PING -ICMP ECHO) and I was able to correct that. Mucho appreciated!
Sure. If you want to do some reading up on some of the finer points of firewalling, checkout the security references thread by unSpawn. Specifically, there are a number of related links in the firewalling, netfilter, iptables section here:
LinuxQuestions.org is looking for people interested in writing
Editorials, Articles, Reviews, and more. If you'd like to contribute
content, let us know.
