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Frequently used Linux one-liners

0 Comments | This entry was posted on Mar 30 2009
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I just submitted a couple of one-liners that I frequently use to Command-line-Fu.

Find brute force attempts on SSHd – Searches the /var/log/secure log file for Failed and/or invalid user log in attempts.
root@empulse:$ cat /var/log/secure | grep sshd | grep Failed | sed 's/invalid//' | sed 's/user//' | awk '{print $11}' | sort | uniq -c | sort -n


List SMTP connections by host – Searches /var/log/secure for smtp connections then lists these by number of connections made and hosts.
root@empulse:$ cat /var/log/secure | grep smtp | awk '{print $9}' | cut -f2 -d= | sort | uniq -c | sort -n | tail

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Linux, Scribd, online store

Linux Security Quick Reference Guide

0 Comments | This entry was posted on Mar 29 2009

I just found this quick reference sheet on Linux security topics from Apache and DNS security to  crucial system files, tcp wrappers, and configuring syslog. This document from LinuxSecurity.com is available as a pdf download is provided below.

Linux Security Quick Reference Guide (pdf)

Excerpt: “Regularly audit your systems for any unauthorized and unnecessary use of the setuid or setgid permissions.”

Quick tip: Find all setuid and setgid programs

root# find / -type f -perm +6000 -ls

Stylus that Works for iPhone & iPod Touch
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Linux, iPhone, online store

New articles released!

0 Comments | This entry was posted on Apr 15 2008
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Hey guys check out these first revisions of these articles on BackTrack linux. I will be revising them over the next few weeks as wells as adding more stuff.

http://www.scribd.com/doc/2542678/GPSwithBackTrack20080414
http://www.scribd.com/doc/2542592/OnlinewithBackTrack20080414

ALSO CHECK OUT:

forums.empulsegroup.com
southwestpcdirect.com
empulsehosting.com

Empulse
http://del.icio.us/empulsegroup

General, Linux, Scribd, online store

Empulse Hosting and other online works

0 Comments | This entry was posted on Apr 08 2008

So I’ve been a little busy setting up a few new projects that I have going on right now.  The first site to come online is Southwest PC Direct, Joe’s and my new online computer component store.  You will a lot of other useful information there also compiled by Joe and me.

The next project is Empulse Hosting [dot] com. We will be offering web and other online services to the masses.  I will also be having information on setting up your first site.

I will also be starting a number of online resources at Squidoo on Linux and Open Source topics.  I will keep you updated on other further developments.

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online store, squidoo, web hosting