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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: More Alerts Alert (TA14-017A) UDP-Based Amplification Attacks (Revised 12 Apr 2016) tronayne	07-14-2020 10:32 AM by RickDeckard	2	30,794
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	40,814
Sticky: Alert (TA16-250A) The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations tronayne	09-07-2016 06:25 AM by tronayne	0	13,347
Sticky: The OWASP Top 10 for 2013 unSpawn	06-15-2013 05:42 AM by unSpawn	0	18,099
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,230
Sticky: Failed SSH login attempts ( 1 2 3 ) Capt_Caveman	01-03-2006 03:22 PM by unSpawn	38	228,009
Setting up a router that has wireless enabled - Linksys and dd-wrt mazinoz	10-27-2018 08:28 PM by mazinoz	2	540
create wordlist crunch end	10-27-2018 11:07 AM by pan64	4	700
Store ecryptfs files inside home folder when enabling full home folder encryption in Linux Murz	10-27-2018 03:57 AM by ondoho	4	1,046
AIDE 0.16-3 on Ubuntu 18.04 overzealous logging, logs even current baseline as having changed RickDeckard	10-26-2018 02:14 PM by RickDeckard	1	649
security risk possible from Genbolt security cameras. that automatically connect to 3 Chinese ip#s even when it is not configur galen	10-25-2018 05:26 AM by galen	3	2,797
How to reliably list pending security updates in Ubuntu Mark_667	10-25-2018 03:49 AM by Mark_667	6	1,738
Update apache ssl cert catiewong	10-24-2018 07:06 AM by berndbausch	9	754
Enable application with grsecurity thecrazyalpine	10-23-2018 06:02 PM by RickDeckard	1	727
How can iptables distinguish between packets coming in from one route versus another? Ulysses_	10-22-2018 05:05 PM by lazydog	6	614
HAPROXY and fail2ban - block IPs taumeister	10-22-2018 10:42 AM by Habitual	2	7,408
Iptables Reload advice glennbtn	10-21-2018 07:17 PM by lazydog	3	651
[SOLVED] SystemD Penetration Testing Results Inquiry dcbdbis	10-21-2018 03:22 PM by dcbdbis	5	2,044
PSA: Flatpak is a security nightmare YesItsMe	10-18-2018 07:20 PM by ordealbyfire83	1	875
Smartcard login with Kerberos under GDM Lesuno	10-18-2018 04:48 AM by bradvan	3	2,679
[SOLVED] iptables blocking certain ports. How do I allow for access? ( 1 2 3 ) PROBLEMCHYLD	10-17-2018 12:23 PM by PROBLEMCHYLD	31	5,276
plugins timeout setting in openvas anctop	10-17-2018 11:45 AM by anctop	0	1,473
[SOLVED] No local public/private keys but can still ssh bulgin	10-16-2018 09:53 PM by bulgin	1	501
If you want security then use Tails. bscho	10-16-2018 04:05 AM by bscho	6	723
non-linux mostly, but serious security question - i'd like comments please ( 1 2 ) X-LFS-2010	10-15-2018 06:00 PM by X-LFS-2010	16	1,466
Help with sudo deny commands FreeIPA Ipolit	10-15-2018 12:26 PM by bradvan	14	3,276
[SOLVED] Centos 7 permission denied for passwd and shadow even as root Yakideo	10-14-2018 05:44 AM by Yakideo	2	14,566
Want to block all the port from Outside network vimalparikh	10-13-2018 01:33 AM by agillator	5	582
Problems with cryptsetup keyfile encrypted root partition under Debian 9, i386 tyuxar	10-12-2018 03:30 PM by sevendogsbsd	1	1,330
Problems with cryptsetup/keyfile and encrypted root partition on Debian 9/i386 brukkal	10-12-2018 12:40 PM by sevendogsbsd	1	1,660
All my personal data were Double Encrypted, Please guide to Decrypt it twice. gsnj	10-11-2018 09:43 AM by sevendogsbsd	3	677
firefox 52.9 master password disabled, unwanted action galen	10-10-2018 10:18 AM by sevendogsbsd	3	484
SSH Permission denied (publickey) Mark_667	10-10-2018 09:47 AM by Turbocapitalist	4	2,769
ways to delete rootsh log jolintan	10-09-2018 12:05 PM by TB0ne	2	938
[SOLVED] Perl SSL object in Linux parpande	10-08-2018 11:40 PM by Turbocapitalist	1	671
adding odd ports to firewall? sniper8752	10-06-2018 11:15 AM by michaelk	5	784
CentOS 5.6 64-bit distribution vincitytaymodaimo	10-05-2018 07:31 AM by TB0ne	3	645
How to properly block incoming / outgoing traffic using iptables tuxthegreat	10-04-2018 01:01 PM by tuxthegreat	9	3,834
ERROR: an invalid certificate is uploaded liloulinx	10-03-2018 04:53 AM by liloulinx	4	1,851
A plenty number of http connection catiewong	10-02-2018 01:56 PM by dc.901	3	769
Xbash Malware/Ransomware/Botnet APT RickDeckard	09-27-2018 10:45 PM by RickDeckard	0	890
Error authentication LDAP and Squid Squidguard noisette	09-26-2018 11:28 AM by mark_poa	5	4,355
Telegram starting up on its own, unwanted. galen	09-26-2018 07:31 AM by sevendogsbsd	7	983
ddos attack code using ns3 dkmbabazi	09-24-2018 11:03 PM by Bryansom	3	1,344
[SOLVED] rkhunter no long updating under MX Linux galen	09-24-2018 11:44 AM by Habitual	6	22,938
non-root permission to the /etc/shadow? tvdtharindu	09-21-2018 03:32 AM by tvdtharindu	2	4,997
WireGuard Mysterious Makefile Wayne Sallee	09-20-2018 10:53 AM by Wayne Sallee	5	896
PAM module authentication fails satish.kumar.yarru	09-19-2018 03:28 AM by satish.kumar.yarru	4	13,357
[SOLVED] Smart card login with CentOS Lesuno	09-18-2018 12:44 PM by Lesuno	0	2,395
/etc/shadow LinuGeek	09-17-2018 04:03 PM by MensaWater	12	1,256
sudo/pkexec versus sandboxes bali	09-17-2018 10:45 AM by bali	6	907
SSSD configure with openldap issue sibyurik	09-17-2018 10:18 AM by sibyurik	1	2,496
Payload handler not starting emodev	09-17-2018 09:08 AM by emodev	2	2,591
Firewall Block packets to broadcast Mattpl	09-17-2018 01:06 AM by Mattpl	14	2,238
Are iptables-based firewall Policy settings the perfect back-stop? boombaby	09-14-2018 10:29 PM by boombaby	6	826
iptables neither systemctl or service starts it richard-g8jvm2	09-14-2018 05:00 PM by richard-g8jvm2	5	1,552

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