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I've also seen my access logs and watched various hacker attacks on my box. Luckily, they've all failed but I have no confidence to expect a default install will hold off all attacks. At this point I would like to get more familiar with linux security and know if there's anything I should automatically do after a basic redhat7 install?
- securing a system is a process, not a product
- the more secure a system is, the less usable it will become
- it will enlighten you on some weaknesses, and things not to do. Some countermeasures are easy to implement, others nigh-impossible.
- a good approach is to go through the list of services you are running, and cut them down to the strict minimum. Most Linux distros fail on this. The first things I cut out were telnet access (and all rsh, rexec, etc -replaced by ssh,scp..) and anonymous ftp.
If you really want a secure (relatively secure) system look at OpenBSD, but that's not linux.