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Linux - Security

Linux - Security This forum is for all security related questions.
Questions, tips, system compromises, firewalls, etc. are all included here.

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Rating Thread / Thread Starter	Last Post	Replies	Views
Sticky: Failed SSH login attempts ( 1 2 3 ) Capt_Caveman	01-03-2006 03:22 PM by unSpawn	38	227,956
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,188
Sticky: The OWASP Top 10 for 2013 unSpawn	06-15-2013 05:42 AM by unSpawn	0	18,092
Sticky: Alert (TA16-250A) The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations tronayne	09-07-2016 06:25 AM by tronayne	0	13,335
Sticky: If you infected by any of these recent ELF malware cases please contact us? ( 1 2 ) malwaremustdie	04-22-2019 10:06 PM by malwaremustdie	21	40,789
Sticky: More Alerts Alert (TA14-017A) UDP-Based Amplification Attacks (Revised 12 Apr 2016) tronayne	07-14-2020 10:32 AM by RickDeckard	2	30,789
ufw / iptables for IPv6 connections - Linux Mint 17 (linux 3.13.0-24) canadiandude007	09-03-2014 07:10 PM by solarisguy	1	2,501
iptables and 127.0.0.1 ( 1 2 ) jokar.mohsen	09-05-2014 02:07 AM by cepheus11	16	14,435
Unable To Successfully Change Root Password Robs58	09-05-2014 10:57 AM by jailbait	3	5,693
Logs to be maintained keeping security in mind pranks	09-06-2014 01:01 AM by pranks	4	794
Windows executable files upload ( 1 2 ) newbie14	09-06-2014 03:27 AM by unSpawn	19	2,724
Cross platform encryption for an SD card Geocritter	09-06-2014 05:19 PM by huertanix	5	2,775
Custom chains for IPTables Beorn1357	09-07-2014 04:12 AM by salasi	5	17,009
Snort telnet login detected sch_vitaliy	09-07-2014 05:12 AM by unSpawn	1	1,727
Media server for a friend not being used DarkLordSauron	09-07-2014 06:57 AM by unSpawn	3	746
Need iptables rule for nmap pp test gprathap1121@gmail.com	09-08-2014 12:13 PM by unSpawn	3	1,091
How to make an extraordinarily incompatible kernel module salantrax	09-08-2014 01:57 PM by salantrax	2	1,012
I want to transfer all syslogs to syslog server with suslog-ng. Kazuki Ohya	09-09-2014 04:00 AM by acid_kewpie	4	1,136
Security analyst, What is it really all about? borgy95	09-09-2014 07:48 AM by linosaurusroot	3	869
[SOLVED] SSL security with online forms Gad	09-09-2014 10:20 AM by Habitual	3	636
Requests from localhost (127.0.0.1) logged on access.log eudald	09-09-2014 03:14 PM by smallpond	1	4,705
trying to connect a VPN network arman moradi	09-09-2014 07:08 PM by arman moradi	2	768
ipset with iptables not working wolfsden3	09-09-2014 08:09 PM by wolfsden3	2	4,053
postgrey in centos:warning: connect to /var/spool/postfix/postgrey/socket SarahGurung	09-10-2014 04:00 AM by Greystone	4	6,940
How to protect system from cloning? ( 1 2 ) dynamicpointer	09-11-2014 12:34 AM by unSpawn	16	3,210
<Syslog-ng>What's source do I need? Kazuki Ohya	09-11-2014 12:57 AM by unSpawn	1	969
I Got A Hacker. Bruteforcing, DDOS attacking, and Backdoorin my computers WHAT TO DO! LinuxSparkles	09-11-2014 01:50 PM by ironwalker	9	1,165
[SOLVED] when i run my rkhunter i get suspicious files :( ( 1 2 ) arman moradi	09-11-2014 01:55 PM by ironwalker	19	3,890
How to setup Auditd to monitor Apache/httpd for stop and restart. Nemus	09-11-2014 06:19 PM by unSpawn	3	2,950
How do I determine how hackers are saving to /tmp on CentOS 6.5 shared hosting houston-hcs	09-11-2014 06:36 PM by unSpawn	8	5,629
Why is ProFTPD responding to active connections using Covia? transient	09-11-2014 11:39 PM by Jamiemco	2	1,839
IP Tables shows port open, nmap shows port closed tkinsella	09-12-2014 02:43 AM by cepheus11	4	9,475
Zimbra Mail Client Authentication using OpenOTP Robin02	09-12-2014 09:08 AM by dr.me	1	2,445
fail2ban did not take action Pearlseattle	09-13-2014 06:24 AM by Habitual	3	1,133
How do you deal with unreliable peers? OtagoHarbour	09-14-2014 02:37 PM by OtagoHarbour	3	1,970
How to know what packages are unnecessary? massy	09-15-2014 05:39 AM by notKlaatu	1	836
Safe storage solutions? Owncloud? sftp? ideas and advice? ( 1 2 ) lin_ux	09-16-2014 12:48 PM by lin_ux	20	4,309
Sanity Check on Linux Security gax7497	09-16-2014 01:30 PM by metaschima	2	2,047
Linux RAID 0 iSCSI array Nick_C	09-17-2014 09:17 AM by pan64	1	818
Linux Web Server \| Bypassing .htaccess \| Penetration Testing er.narender	09-17-2014 03:29 PM by unSpawn	2	1,533
Invalid method in request \x16\x03\x01 hansbjarstal	09-17-2014 03:42 PM by unSpawn	12	5,046
Is my server hacked? ( 1 2 3 ) newlotus007	09-17-2014 04:56 PM by unSpawn	32	9,889
bad domain blocking program Michael13	09-18-2014 02:34 AM by ReaperX7	5	1,046
[SSL/TLS] Error connecting to secure SMTP server littlebigman	09-18-2014 09:26 AM by littlebigman	2	2,800
Rsync + public key authentication security lpa	09-18-2014 08:09 PM by Beryllos	3	2,349
Openssl s_client -connect not seeing certificates of Apache Virtual Hosts Nemus	09-20-2014 02:38 AM by unSpawn	1	1,750
Decrypt <user> folder in /home - Ubuntu 14.04 Danniel	09-20-2014 06:55 AM by Danniel	5	4,084
Forensic opadina	09-22-2014 12:43 PM by opadina	2	799
scan for non-secure contents on https pages khuongdp	09-22-2014 03:31 PM by khuongdp	9	1,051
How safe is ssh/openssh? Noerr	09-22-2014 05:16 PM by unSpawn	6	6,592
FinFisher Spyware - defense against it? displace	09-23-2014 03:52 PM by unSpawn	4	3,157
[SOLVED] FinFisher Spyware - defense against it? [OT] Habitual	09-23-2014 04:40 PM by unSpawn	4	1,341
Authenticating to a Linux Machine from a remote host sghatty	09-24-2014 08:09 AM by YankeePride13	6	625
Security gurus, im a bit stuck here... need a good reliable distro... Teh Agnostic Anarco	09-24-2014 05:07 PM by unSpawn	14	926
[SOLVED] l2tp vs openvpn redwhat	09-24-2014 06:33 PM by redwhat	6	1,284
How to enforce SELinux type context (httpd_sys_content_t) shfyang	09-24-2014 08:44 PM by shfyang	0	2,431

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