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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: 72,565
    01-11-2010 Go to last post
  1. [SOLVED] iptables -- ip address range switch not working.

    I have the following in my iptables script: /sbin/iptables -A INPUT -p udp -m udp -s --dport 10000:20000 -j ACCEPT when I run it...

    Started by ajnabi, 01-07-2013
    • Replies: 1
    • Views: 3,421
    01-07-2013 Go to last post
  2. Winbind with Kerberos Woes

    I hope this is the right forum for this issue, but please move it if not. I've been given the task of integrating some Red Hat Enterprise...

    Started by YTee, 12-18-2012
    • Replies: 3
    • Views: 2,241
    01-03-2013 Go to last post
  3. how to change root permission directory....??

    how can i make that the root and user account cant access the some folder..?? even i set the user permission to lock the folder but the root still...

    Started by krool89, 10-20-2012
    • Replies: 3
    • Views: 1,177
    01-01-2013 Go to last post
  4. System Access best practices - Admin/Monitoring web apps imap etc

    Hi all - I'm looking for some best practices ideas - I have a Centos 5.5 system (soon to be upgraded to 6.3) It has a public IP on it, and...

    Started by treimers, 12-22-2012
    • Replies: 2
    • Views: 971
    12-22-2012 Go to last post
  5. Webscarab to debug remote proxy

    Hello ! I would like to know how to connect Webscarab to my remote test proxy. I'm testing a web app with some beta testers and I would like to start...

    Started by chroma, 12-19-2012
    • Replies: 0
    • Views: 675
    12-19-2012 Go to last post
  6. Having an admin account in Debian and Ubuntu

    Hi! I'm working in a research center that has no IT expert, so I'm trying to help out researchers with their computer problems, as I know a bit more...

    Started by Viandante, 12-07-2012
    • Replies: 6
    • Views: 1,252
    12-14-2012 Go to last post
  7. n00b iptables question.

    I am setting up a new squid daemon to run on my server. I want to make sure that everyone inside my network can access squid but I want to make sure...

    Started by AsherSevyn, 11-30-2012
    • Replies: 4
    • Views: 1,340
    12-10-2012 Go to last post
  8. Can't shut down systemd without going to root

    I am in the process of migrating my AntiX partition to systemd, which I used previously in Arch. I can boot with it but I can't shut down in my own...

    Started by hazel, 11-19-2012
    • Replies: 3
    • Views: 1,308
    12-08-2012 Go to last post
  9. Unhappy Bouncing spam sent 'from localhost' on my server (Qmail)

    Hi all, My server seems to be abused for a rather elaborate way of relaying spam despite being a closed-relay server. The trick is that messages...

    Started by maurits, 12-04-2012
    • Replies: 2
    • Views: 2,455
    12-04-2012 Go to last post
  10. Question How to stop Spam from my server? Please help

    Hi, I am a newbie and have run into a problem on my LAMP stack. The server is running Linux 2.6.18 with Plesk 10.3.1 I have looked everywhere...

    Started by maxs, 11-10-2012
    • Replies: 1
    • Views: 1,543
    11-11-2012 Go to last post
  11. Looking for information on iptables

    So I have my first CentOS server for a personal website and I wanted to block a certain IP address. I was wondering If I add the rule # iptables...

    Started by jwele, 11-02-2012
    • Replies: 5
    • Views: 1,095
    11-05-2012 Go to last post
  12. Userspace SPI without root privileges

    Hi all, My first post around here so please excuse me for all my wrongdoings against the forum etiquette in advance. I would have to create...

    Started by mjsv, 11-01-2012
    • Replies: 0
    • Views: 756
    11-01-2012 Go to last post
  13. Lightbulb [SOLVED] ICMP Port Numbers

    Hi, In my Ubuntu desktop I implemented Gufw 11.10.2 Firewall GUI. I have secured my firewall by DENYING all incoming and outgoing traffic and...

    Started by amithad, 10-11-2012
    2 Pages
    1 2
    • Replies: 10
    • Views: 6,207
    10-17-2012 Go to last post
  14. Lightbulb Network Outburst Monitoring

    Hi, Recently I was in troubled waters hence my network is under some kind of a flooding attack where the time value of ping went over 1024 for...

    Started by amithad, 10-16-2012
    • Replies: 0
    • Views: 668
    10-16-2012 Go to last post
  15. WHM server hacked, lost root access

    I have a huge problem. In a nut shell, 2 days ago I noted a strange process going on with httpd, something I never saw before. That then led to me...

    Started by linkandzelda, 10-10-2012
    • Replies: 5
    • Views: 1,921
    10-11-2012 Go to last post
  16. [SOLVED] Pam - otpw -ssh

    I don't know if I'm at the right place with my question, it's kind of interdisciplinary. To explain my problem - finally I have to provide access...

    Started by nimdardo, 08-16-2012
    • Replies: 7
    • Views: 9,075
    10-10-2012 Go to last post
  17. using a hashed password file

    I'm looking for an encryption utility/software that will help me do the following: I have a script that runs periodically that will look at a file...

    Started by dpm7896, 10-08-2012
    • Replies: 2
    • Views: 779
    10-08-2012 Go to last post
  18. Question Hacked CentOS 5 server - possible rootkit installed?

    I am running CentOS 5.3 and here is the result of "chkrootkit": Possible t0rn v8 \(or variation\) rootkit installed Warning: Possible Showtee...

    Started by dand, 10-04-2012
    • Replies: 3
    • Views: 3,372
    10-05-2012 Go to last post
  19. Password Protected RSA keys for ssh

    Hey, I was just wondering if people opted to password protect their RSA keys, or if they just left them raw. For me, I like to hope that I maintain...

    Started by hobuscorpus, 10-03-2012
    • Replies: 2
    • Views: 1,173
    10-03-2012 Go to last post
  20. Exclamation My CSF is blocking me from webmin

    My CSF keeps blocking me from going to webmin and sometimes to me site and even SSH. I added my ip to whitelist but i have a dynamic ip so this is...

    Started by Website, 10-01-2012
    • Replies: 1
    • Views: 1,770
    10-02-2012 Go to last post

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