Linux Security

4K

Solutions

4

Articles & Videos

4K

Contributors

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by which these flaws can be removed, generally divided into two parts: authentication and access control. Authentication is responsible for ensuring that a user requesting access to the system is really the user with the account, while access control is responsible for controlling which resources each account has access to and what kind of access is permitted.

Related Topics

  1. Linux
  2. Linux Networking
  3. Linux Distributions
  4. Security
  5. Software Firewalls
  6. Linux OS Dev
  7. Apache Web Server
  8. OS Security
  9. SSH / Telnet Software
  10. Unix OS
Refine results

Hi All,

Getting the above following message in my auth.log on my server from the above ip and many others ... what does this mean?

J

939 views
Free learning courses: Active Directory Deep Dive
Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

Dear Colleagues,

I have a problem with executing SU command in Ubuntu 16.04.02. LTS.
The output is « -bash: /bin/su: Permission denied » (see attached screenshot).

Plz suggest something to …

770 views

I want firefox to not erase cookies on browser close. I want to set this via a script. Below are gui based instructions for the goal settings.

Anyone know how to do this?

Thanks!

Firefox

140 views

It is some type of Linux honey pot program. I was given a fife, honeymine.py, that is supposed to set the program up to to end to a SIEM to gather information on my internal network. Supposed to be …

374 views

What is the easiest way to do this , do you have a sample kickstart file you can share with me that would have these options

thanks!!!!!!!!

171 views

What is 'sticky session' when considering web traffic load balancing and how session-stickiness is usually achieved ?

can you please explain me a real world scenario. Like how it is used.

241 views

hi all,

I am now learning basic operation of Lunix and unix:

1) how to list active process in linux and unix and kill it accordingly.
2) how to change application start mode so that we can …

21121 views

Hi,
i'm looking for the quickest way to query Windows Event ID's from a Linux CentOS device.
I managed to do it via WMI but the enumerations of security logs using WMI simply takes too long.
what …

376 views

I am trying to set up a linux box as router ( packet forwarder to external + NAT). All the references I have found show that can be achieved using  iptables.
The question I have , if for performance …

357 views

I have Included the script.  This is a new install but the access_log is real and has values in it.  This script works on another instance without any problems.  The script reads the access log and …

693 views
Industry Leaders: We Want Your Opinion!
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Hi,

I want ot learn and practive Linux commands on my windows 10 laptop. how to instal and set up and practice in centos. please advise
I was checking below but not sure where and how to get …

65194 views

Hi there
We are an MSP and cloud host. We would like to buy (or use) a web filter that we can provision in the cloud and offer to our clients to use it as a web proxy (if that’s the best way, …

7188 views

Hi,

I am trying to set up a openLDAP (2.44) search/auth-proxy to a Windows 2012 R2 AD server on and off for a month now with no apperent success.

Third party applications need to search (verify)…

37220 views

Hello guys,
well i wanted to clear root password and admin password (sudo user) , using passwd -l root and then passwd -l admin, the result was successful
well my question how i can reset the …

780 views

Fine Tune your automatic Updates for Ubuntu / Debian

0144 views

I have a python script that copies some proprietary code from a USB to an app folder on a debian wheezy system.  The usb will be sent to a client site for them to plugin and click a button to do the …

591 views

Hi, I am running mail sever on a CentOS 7 Linux, the default permission of /var/log/maillog is not worldwide readable, I want to make it readable to others.

In the rsyslog.conf, I added the …

2126 views

Keep getting this error every time I add a password to a user.

(CODE)

281 views

Hi guys.

We are building a certain system where the user register to the website and the same user has to be created on the OS level
The web registration form automatically hashes the password …

17117 views
Back Up Your Microsoft Windows Server®
Back Up Your Microsoft Windows Server®

Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.

What´s the diference ? can I use liboauth-php instead oauth-1.2.3 ?
the liboauth is installed, but not working ?
I´m using Debian Wheezy.

3106 views

Centos 7.  user no longer able to access home dir.   Secure log shows fatal: bad ownership or modes for chroot directory "/home/username" [postauth].  Root owns /home, user owns /home/username.  …

6321 views

i have set some rules in ip tables as example i added

(CODE)

and thats how my iptables looks like

(CODE)


but there is always ips by-pass the limit and they go up to 400 connection per …

2262 views

Please tell me what this error means?  

(CODE) - this is the complete error

I have mod_security in httpd.conf commented out.  

(CODE)

Ultimately, I want it disabled.  So is there a better …

2104 views

We have a Debian 7 server on which Virtualmin-Webmin is installed for serving virtual servers.
Spam emails are being sent continuously and we cannot find out how.

There is NO email set on the …

10179 views

Hi all -
I have sites where I force HTTP -> HTTPS using this code in HTACCESS:
   RewriteEngine On
   RewriteCond %{SERVER_PORT} 80
   RewriteRule ^(.*)$ https://example.com/$1 [R,L]      
NOW I have…

9178 views
Show more content
201506-LO-Top-001

Linux Security

4K

Solutions

4

Articles & Videos

4K

Contributors

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by which these flaws can be removed, generally divided into two parts: authentication and access control. Authentication is responsible for ensuring that a user requesting access to the system is really the user with the account, while access control is responsible for controlling which resources each account has access to and what kind of access is permitted.

Related Topics

  1. Linux
  2. Linux Networking
  3. Linux Distributions
  4. Security
  5. Software Firewalls
  6. Linux OS Dev
Top Experts In
Linux Security