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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: 71,830
    01-11-2010 Go to last post
  1. Exclamation New Virus For Ubuntu/Linux?

    Hi Guys, Well here I was doing some research online for work, no apps open except the browser (FF3 or Epiphany, can't remember) and two terminals...

    Started by antony7, 01-27-2009
    2 Pages
    1 2
    • Replies: 11
    • Views: 6,376
    04-07-2009 Go to last post
  2. Scary rkhunter output

    So I ran rkhunter just to make sure things are on the up and up, and I found a couple of things that are suspect When checking the network it came...

    Started by Dann, 04-03-2009
    • Replies: 2
    • Views: 1,786
    04-07-2009 Go to last post
  3. [SOLVED] hacked by spammer? (sendmail-mta running wild)

    Hello! I came back to work after some time, and noticed that my logs are running very big... I traced it to the sendmail-mta program that somehow...

    Started by alfmarius, 04-03-2009
    • Replies: 1
    • Views: 17,656
    04-03-2009 Go to last post
  4. I think I have been hacked, root password has been changed

    I turn on my fedora 9 and I am browsing through files and I see that an account by the name of SirLnX, in my /home directory. My firewall is down,...

    Started by tim.pirate, 04-01-2009
    • Replies: 7
    • Views: 3,628
    04-01-2009 Go to last post
  5. Can't add rule to Snort

    Hey guys, I'm trying to add this rule on to snort so that it can detect computers on my network that have been...

    Started by SagaciousKJB, 03-31-2009
    • Replies: 0
    • Views: 1,074
    03-31-2009 Go to last post
  6. Security for newbies

    Hi, I've a problem to solve and I hope some of you may help me. A friend of me, who are basically ignorant with computer, have high security...

    Started by Alpointe, 03-30-2009
    • Replies: 3
    • Views: 1,043
    03-30-2009 Go to last post
  7. Zone alarm/alternative

    Hello, would zone alarm work on linux? if it does, will it work good? and if it doesnt, are there other firewalls very much like it so that i can...

    Started by vampire slayer, 02-19-2005
    • Replies: 4
    • Views: 34,101
    03-29-2009 Go to last post
  8. SELinux

    Hi all, I have a question about SElinux. I want to know what does this message mean: Avc : denied {getaatr} for comm=’a.out’ dev=devpts egid=0...

    Started by tatata, 02-23-2009
    • Replies: 1
    • Views: 1,098
    03-29-2009 Go to last post
  9. passwd : how to setup it ?

    Hello, when trying to setup a password with the standard system command 'passwd' I receive following message : BAD PASSWORD : it is based on a...

    Started by bcostacurta, 03-17-2009
    • Replies: 6
    • Views: 2,416
    03-18-2009 Go to last post
  10. Way (ways) to change uid of a process

    Hello All! I'm newbie in unixes and in doubt in one question. How we can change a euid of a process? Become a root for example. The only...

    Started by psea, 03-16-2009
    • Replies: 0
    • Views: 2,310
    03-16-2009 Go to last post
  11. Question [SOLVED] Firewall activation at boot

    Is there a way to have Firestarter start without requiring a password. I tried to set Firestarter active on boot / login, but it failed because a...

    Started by graphicks, 03-16-2009
    • Replies: 2
    • Views: 1,129
    03-16-2009 Go to last post
  12. pam_unix(sshd:auth): conversation failed

    I'm using Ubuntu 8.04 with thin clients at an elementary school. When a student types in the wrong password (which happens often), it takes over 2...

    Started by kraigge, 02-22-2009
    • Replies: 3
    • Views: 23,882
    03-15-2009 Go to last post
  13. Question Adding Groups to Groups

    Using a GUI how to you add one group (with users) to another group (with other users)? In other words if you add Group A to Group B then B has all...

    Started by measekite, 03-11-2009
    • Replies: 0
    • Views: 815
    03-11-2009 Go to last post
  14. What is openssh doing?

    I'm having some problems with ssh into my university network. For the most part it works fine, but if I'm on the university wireless connection, it...

    Started by skroops, 01-12-2009
    • Replies: 2
    • Views: 1,206
    03-10-2009 Go to last post
  15. what is libcurl3 ?

    i always do the suggested updates, when they come up, and tonight i did one called libcurl3...I decided to look at it, and possib;y remove it with...

    Started by bigvoo, 03-06-2009
    • Replies: 1
    • Views: 4,036
    03-06-2009 Go to last post
  16. Query: TCP/IP security logging capabilites

    Dear Experts, I am reasonably new to the Linux networking. I am just wondering if the Linux networking stack records various attacks to the...

    Started by billysmithlq, 03-02-2009
    • Replies: 2
    • Views: 2,601
    03-03-2009 Go to last post
  17. selinux newuser problem

    hi i m new to selinux. i have installed selinux on my ubuntu hardy8.04 machine. it installed successfully. now i have created a new linux user and...

    Started by fileuploadoct08, 02-24-2009
    • Replies: 1
    • Views: 1,154
    02-26-2009 Go to last post
  18. Encapsulate ("tunnel") local outgoing packets using IPsec

    Can I encapsulate an outgoing IP packets using IPsec with different src/dst ip addresses using strongSwan? For example, the local host is...

    Started by arrowheart, 02-12-2009
    • Replies: 0
    • Views: 1,048
    02-12-2009 Go to last post
  19. question about default iptables config in ubuntu

    I was wondering about the security of the default iptables configuration in ubuntu. I know that it does not filter ICMP packets by default. Is that a...

    Started by LennythePingwin, 02-11-2009
    • Replies: 4
    • Views: 3,583
    02-11-2009 Go to last post
  20. Exclamation How actually packet traverse in IPTables

    suppose I have IPTable configured firewall on my box than according to the diagram of packet traversing in IPTables, the local process will be my...

    Started by priyadarshan, 02-11-2009
    • Replies: 1
    • Views: 2,229
    02-11-2009 Go to last post

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