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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 linuxforums.org 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: 70,261
    01-11-2010 Go to last post
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  1. [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, 3 Weeks Ago
    • Replies: 2
    • Views: 3,229
    2 Weeks Ago Go to last post
  2. 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: 4,645
    03-03-2017 Go to last post
  3. 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: 1,401
    02-23-2017 Go to last post
  4. [SOLVED] Strange process running

    Should Netcat be running on my Lubuntu 16.04 desktop computer. $ps -ef nc -q -1 127.0.0.1 30000 update: I was running PlayonLinux and it...

    Started by Reese1379, 02-19-2017
    • Replies: 1
    • Views: 728
    02-19-2017 Go to last post
  5. 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: 283
    02-19-2017 Go to last post
  6. 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: 544
    02-19-2017 Go to last post
  7. 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: 3
    • Views: 4,781
    02-17-2017 Go to last post
  8. 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: 650
    02-08-2017 Go to last post
  9. 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: 1,239
    01-25-2017 Go to last post
  10. 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: 599
    01-14-2017 Go to last post
  11. 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: 742
    12-17-2016 Go to last post
  12. 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: 501
    12-08-2016 Go to last post
  13. 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: 1,232
    11-23-2016 Go to last post
  14. 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: 649
    11-15-2016 Go to last post
  15. 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: 5,775
    10-17-2016 Go to last post
  16. 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: 5,146
    08-13-2016 Go to last post
  17. 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: 3,484
    08-05-2016 Go to last post
  18. 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: 3,800
    07-27-2016 Go to last post
  19. Linux Live Pen

    Hi I'd like to be able to create a persistent Linux live pen, then use the first session to personalize it (change keyboard layout to portuguese,...

    Started by tronisus, 07-06-2016
    • Replies: 4
    • Views: 4,289
    07-18-2016 Go to last post
  20. hidden files issue

    Hi, I've found two hidden folders on my home folder containing strange files like libsmmulti.so.sc.so.svc I can't find any information on the...

    Started by ciok, 07-07-2016
    • Replies: 5
    • Views: 3,873
    07-08-2016 Go to last post

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