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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: 72,545
    01-11-2010 Go to last post
  1. 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: 1,241
    05-10-2017 Go to last post
  2. 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: 1,303
    05-04-2017 Go to last post
  3. 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: 1,774
    05-01-2017 Go to last post
  4. [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: 4,701
    04-06-2017 Go to last post
  5. 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: 5,523
    03-03-2017 Go to last post
  6. 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: 1,771
    02-23-2017 Go to last post
  7. [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: 1,166
    02-19-2017 Go to last post
  8. 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: 700
    02-19-2017 Go to last post
  9. 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: 1,036
    02-19-2017 Go to last post
  10. SSh -RSA2 Key Fingerprint changed?

    Hi All - Hope you can help I have a Raspberry Pi - running Raspian It had a fixed IP address and all of a sudden, I could not see it via SSH...

    Started by devwink, 02-04-2017
    • Replies: 4
    • Views: 1,112
    02-08-2017 Go to last post
  11. Question Auditing Issue on RedHat 6 (aureport showing bogus data)

    Greetings! It's been several years since I've worked with Linux, and I just started a job managing/auditing a system that includes a cluster running...

    Started by DJ_Thrive, 12-23-2016
    • Replies: 3
    • Views: 1,656
    01-25-2017 Go to last post
  12. Encrypted Home Folder

    Hi ! When installing a distro, users are given the choice to encrypt (or not) their "Home folder" with a pass phrase. So, with that pass nothing...

    Started by LIGNUX, 01-13-2017
    • Replies: 3
    • Views: 1,009
    01-14-2017 Go to last post
  13. I want to try privacy and/or security Linuxes

    I would like to try privacy and/or security Linuxes if this combination is possible. Please recommend this kind of distributions if you have...

    Started by c3p0, 12-16-2016
    • Replies: 3
    • Views: 1,129
    12-17-2016 Go to last post
  14. Is TLS applied over a network kickstart server?

    I have a kickstart server. It doesn't use any http service at all. It does run a kickstart script over our network. Can TLS be applied to that or...

    Started by edomingox, 12-08-2016
    • Replies: 0
    • Views: 765
    12-08-2016 Go to last post
  15. Will openssl 1.0.1c install on a CentOS 5.11 or 6.7 machine?

    I been trying to find information on this on the openssl website but couldn't. I'd like to know if anyone has tried this yet. Currently I have...

    Started by edomingox, 11-22-2016
    2 Pages
    1 2
    • Replies: 17
    • Views: 2,718
    11-23-2016 Go to last post
  16. [SOLVED] Having problems with openssl...

    I have a linux system using CentOS 6.7. I just started working with openssl. I ran the following command: openssl genrsa -aes256 -rand /dev/...

    Started by edomingox, 11-14-2016
    • Replies: 2
    • Views: 921
    11-15-2016 Go to last post
  17. Unhappy how to break grub password

    Hi I forget my grub password. so that when i want to go into single user mode from the grub stage. but i can't so that i want to brak that...

    Started by harsh4harshil, 02-22-2008
    • Replies: 2
    • Views: 6,259
    10-17-2016 Go to last post
  18. How to ban myself if i load webpage more than 1 times at a time?

    Hello, im trying to achive that more than 1 simultaneous connections from one /24 subnet is rejected by netfilter But i cant manage to get...

    Started by postcd, 08-11-2016
    • Replies: 1
    • Views: 5,448
    08-13-2016 Go to last post
  19. Linux & Sonicwall (TZ300)

    I have a mixed Linux and Windows LAN behind a (Dell) Sonicwall TZ300 firewall (with LAN DHCP service). The Sonicwall forwards WAN related DNS...

    Started by stustd, 08-05-2016
    • Replies: 0
    • Views: 3,725
    08-05-2016 Go to last post
  20. PAM Question

    Hi all, In theory this makes sense, but I'd just like to check before implementing it: I'm transitioning password backends from pam_radius to...

    Started by doublez13, 07-27-2016
    • Replies: 2
    • Views: 4,032
    07-27-2016 Go to last post

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