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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	227,849
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,079
Sticky: The OWASP Top 10 for 2013 unSpawn	06-15-2013 05:42 AM by unSpawn	0	18,082
Sticky: Alert (TA16-250A) The Increasing Threat to Network Infrastructure Devices and Recommended Mitigations tronayne	09-07-2016 06:25 AM by tronayne	0	13,324
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	40,725
Sticky: More Alerts Alert (TA14-017A) UDP-Based Amplification Attacks (Revised 12 Apr 2016) tronayne	07-14-2020 10:32 AM by RickDeckard	2	30,776
Red Hat 7 STIG on CentOS ( 1 2 ) itayuman	11-07-2019 10:31 AM by boxbbcar	19	21,334
Can someone assist me with my rkhunter.log - i was hacked garylwe	11-07-2019 01:54 PM by ChuangTzu	10	1,036
ssh key and yubikey wdatkinson	11-12-2019 12:02 PM by PECONET009	1	609
vpn killswitch vans25	11-12-2019 01:49 PM by /dev/random	1	818
[SOLVED] Is antivirus software on a home Linux install necessary ( 1 2 ) LionHeartIV	11-17-2019 06:36 AM by //////	23	1,813
Please help with SPF setup in Postfix GTrax	11-17-2019 06:51 AM by GTrax	2	622
Capabilities in a parent user namespace YuvalAvra	11-17-2019 02:44 PM by YuvalAvra	0	564
fstab mounting cifs voumes in file_mode=755, need it to be 777, I think gregorywest	11-19-2019 08:59 AM by jeremy	1	1,944
fedoraproject hardening badbanana	11-22-2019 04:22 PM by Jan K.	3	611
Countermeasures to free software that secretly uses CPU time to mine cryptocurrencies Ulysses_	11-22-2019 10:15 PM by ntubski	13	1,065
fstab mounting cifs voumes in file_mode=755 / readonly , needs to be readwrite gregorywest	11-23-2019 02:00 AM by business_kid	5	2,860
Can a hostile script be installed from a web page by itself with out the user password ? TokTok	11-24-2019 02:46 PM by ehartman	9	913
[SOLVED] Telnet issue ( 1 2 ) 1s440	11-27-2019 06:34 AM by wpeckham	20	2,600
[SOLVED] Mint vs. Pure OS Boggs45	12-01-2019 04:15 PM by Boggs45	2	1,499
How to encrypt a file for use between different systems? wearetheborg	12-02-2019 04:39 PM by syg00	11	1,068
Can you tell from dpkg --list what kind of security breach I have on my Lenovo Desktop running TAILS? ( 1 2 ) mailbox96321	12-03-2019 05:22 PM by scasey	21	3,102
RHEL: /etc/ssh/sshd_config "ClientAliveInterval" versus etc/profile "TIMEOUT" and "TMOUT" linuxuser0024	12-04-2019 01:54 PM by scasey	1	1,470
New Linux/*BSD Vulnerability Lets Attackers Hijack VPN Connections //////	12-08-2019 03:37 AM by //////	2	713
CIS Database Security Auditing SQL Script metallica1973	12-08-2019 05:19 AM by unSpawn	1	1,427
[SOLVED] Reverse Path Filtering binkyd	12-08-2019 07:12 AM by business_kid	1	669
[SOLVED] Free SSL certificate droid.c3p0	12-08-2019 12:52 PM by scasey	1	855
pam_tacplus and ssh question fdinnocenzo	12-09-2019 11:11 PM by paddyvgc	3	6,654
Facebook bypasses my firewall lucmove	12-10-2019 11:21 PM by rnturn	6	745
Gnupg - Seahorse bendipa	12-11-2019 09:21 AM by sevendogsbsd	1	699
iptables drop rules oswerks	12-13-2019 01:53 AM by oswerks	1	534
Why should I check the hash of a file that was downloaded or downloaded via ssh? cesarsj	12-15-2019 11:39 AM by RickDeckard	5	777
similar command base64 Pinguino99	12-16-2019 06:57 AM by sevendogsbsd	10	799
Replacement for Sirrix' "Browser in the Box" joe_2000	12-16-2019 12:45 PM by joe_2000	0	986
Linux kernel Spectre V2 Vulnerable? Crippled	12-18-2019 01:30 AM by astrogeek	4	2,304
[SOLVED] Can't get PureVPN to work with Firewall Gufw ( 1 2 ) shinanqu	12-19-2019 09:18 AM by shinanqu	15	1,965
SSH Configuration - Looking for a thorough "how to" pizzelle	12-19-2019 06:49 PM by scasey	2	510
Do I need both grub and grub 2 on centos7 rickyracerus	12-19-2019 09:40 PM by jefro	3	487
[SOLVED] How to Automatically unlock luks and ask for password? bt101	12-23-2019 11:54 PM by bt101	1	2,788
[SOLVED] How can the polkit daemon launch something like synaptic when it isn't a privileged user? hazel	12-25-2019 09:10 AM by hazel	5	918
fedora firewalld applet panel icon is black bricks with black shield; is this normal???? se440bx2	12-25-2019 10:45 PM by se440bx2	0	844
Startpage may not be so private now LU344928	12-25-2019 11:23 PM by Flow_Control	12	953
[SOLVED] Forgotten password > resetting it using ls /home gives wrong username C. Baan	12-26-2019 11:02 AM by C. Baan	2	588
[SOLVED] Collector? Is this a security risk? Soadyheid	12-28-2019 08:20 AM by Soadyheid	7	945
Sharp Netwalker/Ubuntu 9.04/Outdated Security jakfish	12-28-2019 02:29 PM by jakfish	4	912
[SOLVED] How to de-activate key ring password pop-up on login. Mint 19.03 xfce wayne1937	12-30-2019 06:48 PM by jmccue	1	1,058
Cookies and security... ButterflyMelissa	12-31-2019 12:27 PM by ButterflyMelissa	6	572
wish-you.co virus, hoax or real? ButterflyMelissa	01-03-2020 02:30 AM by ButterflyMelissa	11	2,827
How to add accept exclusions using nftables AndyPC	01-04-2020 02:01 PM by scasey	1	1,698
Disabling the insecure methods on Apache tomcat ramakotip	01-06-2020 09:38 AM by fatmac	1	758
Regarding SSH key authentication ncnaveen_arasu	01-08-2020 06:58 AM by TB0ne	4	747
[SOLVED] Fail2ban fakie_flip	01-10-2020 08:38 PM by fakie_flip	3	620
[SOLVED] Gnupg issue bendipa	01-11-2020 11:40 AM by bendipa	1	579
NFTables Knocking glennbtn	01-12-2020 11:44 AM by glennbtn	0	1,086
Linux User Authentication pythops	01-12-2020 05:14 PM by phantom_cyph	1	670
How do I add ACCEPT exceptions to entries alread DROPped? AndyPC	01-14-2020 12:12 PM by AndyPC	7	1,139

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