LinuxQuestions.org
LinuxAnswers - the LQ Linux tutorial section.
Go Back   LinuxQuestions.org > Blogs
User Name
Password

Notices

Old

OpenSSH daemon hardening ( Part 1 ) - Modify the configuration file [ANNOUNCEMENT]

Posted 12-10-2010 at 09:23 AM by angelo.fonzeca (Angelo Fo. personal blog)
Updated 12-13-2010 at 07:29 AM by angelo.fonzeca

Introduction

OpenSSH is a daemon (a "service" in Unix environments) which helps system administrators to manage server remotely.
The SSH daemon is "similar" to "telnet" in the sense that it provides a remote shell for accessing Unix or GNU/Linux systems.
The main difference is that the latter doesn't use encryptation during the session, so it's easily to intercept the content of the communication between two machines (typically a client/server...
PerseusGuard Developer
Posted in Linux Security
Views 1155 Comments 0 angelo.fonzeca is offline
Old

OpenSSH daemon hardening ( Part 2 ) - How to use RSA/DSA Keys [ANNOUNCEMENT]

Posted 12-10-2010 at 09:19 AM by angelo.fonzeca (Angelo Fo. personal blog)
Updated 12-13-2010 at 07:30 AM by angelo.fonzeca

[Note: This is a draft version of the post; it'll be revised as soon as possible]

Introduction

In my previous post, I explained you how to configure OpenSSH for improving its security. By the way, if your SSH service is available on the Internet and accessible by any IP address (e.g. You connect your client on the internet with a dynamic IP address and/or you want reach your server from anywhere...), it can be more exposed to brute force attacks! So a new "hardening...
PerseusGuard Developer
Posted in Linux Security
Views 998 Comments 0 angelo.fonzeca is offline
Old

OpenSSH daemon hardening ( Part 3 ) - Setup a chroot enviroment on CentOS with JailKit[ANNOUNCEMENT]

Posted 12-10-2010 at 09:16 AM by angelo.fonzeca (Angelo Fo. personal blog)
Updated 12-13-2010 at 07:31 AM by angelo.fonzeca


[Note: This is a draft version of the post; it'll be revised as soon as possible]


Introduction - What is a chroot?


"A chroot on Unix operating systems is an operation that changes the apparent disk root directory
for the current running process and its children. A program that is
re-rooted to another directory cannot access or name files outside that
directory, and the directory is called a "chroot jail" or
...
PerseusGuard Developer
Posted in Linux Security
Views 1547 Comments 0 angelo.fonzeca is offline
Old

How-to: Harden a Linux Web Server (Overview) [ANNOUNCEMENT]

Posted 12-10-2010 at 09:02 AM by angelo.fonzeca (Angelo Fo. personal blog)
Updated 12-13-2010 at 07:32 AM by angelo.fonzeca

Introduction

Last weeks on "System administrators" group on Linkedin, the members talked about how to harden a GNU/Linux web server for an hacking contest.
Because I think it was born an intersting "to do" list about the argument during a post of mine, I have taken the decision to report in this article the ideas and my vision of the problem.

The following words are what I wrote...


Hardening Linux step-by-step
...
PerseusGuard Developer
Posted in Linux Security
Views 1545 Comments 0 angelo.fonzeca is offline
Old

FIC and Rootkit Revealers for Gnu/Linux - How to use Rkhunter, Chkrootkit, Afick [ANNOUNCEMENT]

Posted 12-10-2010 at 08:53 AM by angelo.fonzeca (Angelo Fo. personal blog)
Updated 12-13-2010 at 07:34 AM by angelo.fonzeca

File Integrity Checkers and Rootkit Revealers for Gnu/Linux - Part 1

Original post at digitalpatch.blogspot.com

Introduction


Are you afraid that your system has been compromised by an unauthorized access?
Have you got discovered abnormal network activities and/or do you suspect that your system has been infected by trojans or rootkit?

Is this your nightmare?

No problem, there are some solutions which help...
PerseusGuard Developer
Posted in Linux Security
Views 825 Comments 0 angelo.fonzeca is offline

  



All times are GMT -5. The time now is 04:43 PM.

Main Menu
Advertisement

My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration