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Forum: Security

Post here for help with Linux security issues: antivirus, firewalls, encryption, vulnerabilities, etc

  1. Sticky Thread Sticky: A short guide to Linux security

    Here at we are often asked about the potential threat of a virus or malware attack. This short guide is designed to answer some of...

    Started by fingal, 02-25-2006
    • Replies: 1
    • Views: 71,845
    01-11-2010 Go to last post
  1. SELinux implementation with virtual machines

    I am working with SELinux for my final year project.My objective is to show how to prevent zero day exploits with SELinux.I am planning to use...

    Started by nengo, 10-08-2007
    • Replies: 3
    • Views: 1,124
    5 Days Ago Go to last post
  2. Firewall rules to drop all traffic on port 80 and 443 but allow wget .

    Hello all, I have a interesting situation here. My current situation is: I have a Linux server which acts as a gateway for several other Linux...

    Started by terrywhitejr2000, 1 Week Ago
    • Replies: 0
    • Views: 394
    1 Week Ago Go to last post
  3. How can i redirect to other IP without "iptables -t NAT" ?

    Hello, i was curious which other method/s i can use to redirect incoming connection to different IP? Beside using "iptables -t NAT" kind of rule? ...

    Started by postcd, 07-29-2017
    2 Pages
    1 2
    • Replies: 15
    • Views: 2,007
    08-03-2017 Go to last post
  4. Top Reasons Why Linux Server Needs 2FA

    What are the process to secure linux servers?

    Started by reve-secure, 07-09-2017
    • Replies: 2
    • Views: 2,007
    07-27-2017 Go to last post
  5. System logging vs Auditing

    Hi all. I've got Oracle Linux 7 and I need to log events related to users logons, processes start\stop and some other in order to be in compliance...

    Started by Olegg, 07-21-2017
    • Replies: 2
    • Views: 1,045
    07-24-2017 Go to last post
  6. Unauthorized USB uploads...whats the name of the program?

    I just did a fresh install of Fedora 26 on my laptop. I had previously installed an app that prevents unauthorized persons from sticking a...

    Started by Raafi, 07-21-2017
    • Replies: 0
    • Views: 188
    07-21-2017 Go to last post
  7. Post How can i iptables block hostname instead of IP and on partial match?

    Hello, how can i on Linux (CentOS 6 in my case) block all incoming connections (maybe better to say deny forwarding of the network connection...

    Started by postcd, 06-25-2017
    • Replies: 3
    • Views: 2,451
    07-04-2017 Go to last post
  8. SNORT rule does not work!

    hello I have a problem. I do these steps of snort for adjusting rule. 1. cd /etc/snort/rules 2. sudo nano twitter.rules 3. reject tcp any...

    Started by pink-hat, 06-22-2017
    • Replies: 0
    • Views: 680
    06-22-2017 Go to last post
  9. [SOLVED] decryption issue

    Hi there. When i installed my os, majaro, i chose to encrypt all the partitions. at the first boot i immidiately noticed it took a very long time to...

    Started by nicocasa, 06-07-2017
    • Replies: 1
    • Views: 2,046
    06-09-2017 Go to last post
  10. Secure my servers

    I have a small company with at least 5 workers. Well we have one server(FTP,mail,voip) and second server(PTGR, Cacti). We offer services to other...

    Started by victorzx, 06-06-2016
    • Replies: 4
    • Views: 6,554
    05-22-2017 Go to last post
  11. File system granularity levels

    Is there a way to give permission levels go beyond READ. WRITE and EXECUTE. for example, if i want to restrict copy certain files to usb drives, it...

    Started by djpexhibit, 05-16-2017
    • Replies: 7
    • Views: 2,325
    05-18-2017 Go to last post
  12. iptables rules

    when I apply the following rule iptables -A INPUT -i wlan0 -j REJECT iptables -A OUTPUT -o wlan0 -j REJECT am I rejecting all traffic on...

    Started by lgcs, 05-10-2017
    • Replies: 0
    • Views: 1,093
    05-10-2017 Go to last post
  13. Lightbulb Information on Linux GUI Based Trasperant Firewall

    Hi All, Could I know a good Linux firewall which is has GUI, QOS and Traffic control capabilities with good documentation? My requirement is as...

    Started by amithad, 05-04-2017
    • Replies: 0
    • Views: 1,183
    05-04-2017 Go to last post
  14. How do you set up locking out accounts after inactivity for 30 days?

    I've done some research but I've never done this with NIS. I'm wondering if what I describe here will work: On my NIS master, add to the...

    Started by edomingox, 04-27-2017
    • Replies: 2
    • Views: 1,572
    05-01-2017 Go to last post
  15. [SOLVED] What does this mean in iptables?

    I been having trouble figuring out what this means in one of my servers iptables. Maybe someone can explain it to me. Chain OUTPUT (policy...

    Started by edomingox, 03-31-2017
    • Replies: 2
    • Views: 4,340
    04-06-2017 Go to last post
  16. Locked Down Computer

    Hi, I'm brand new here, so I hope this is the right forum. My boss gave me her deceased sister's computer, to try to get into it. (She has...

    Started by MissAnnThrope, 03-01-2017
    • Replies: 7
    • Views: 5,290
    03-03-2017 Go to last post
  17. Exclamation Need help for Fail2Ban failregex

    Hello, please help me, i try to create this regex for fail2ban over 4 hours! with no result. Can anyone please help me to create a regex for...

    Started by freek51, 02-23-2017
    • Replies: 0
    • Views: 1,715
    02-23-2017 Go to last post
  18. [SOLVED] Strange process running

    Should Netcat be running on my Lubuntu 16.04 desktop computer. $ps -ef nc -q -1 30000 update: I was running PlayonLinux and it...

    Started by Reese1379, 02-19-2017
    • Replies: 1
    • Views: 1,070
    02-19-2017 Go to last post
  19. Two passwords work for sudo?

    I have a NIS environment. A user has a NIS account which the password just expired, so he changed it. He also has sudo access for only his machine...

    Started by edomingox, 02-16-2017
    • Replies: 1
    • Views: 654
    02-19-2017 Go to last post
  20. Wine, PlayOnLinux, Crossover Linux & OS Security

    Hi everyone ! Usually in order to reduce the surface attack of the OS, it is advised not to use any proprietary software, especially those made to...

    Started by LIGNUX, 02-17-2017
    • Replies: 2
    • Views: 954
    02-19-2017 Go to last post

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