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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	18,098
Sticky: Security references unSpawn	02-25-2006 01:04 AM by unSpawn	6	242,226
Sticky: Failed SSH login attempts ( 1 2 3 ) Capt_Caveman	01-03-2006 03:22 PM by unSpawn	38	228,008
How to block all external IP with firewall-cmd? hack3rcon	02-03-2019 12:55 AM by hafeezisbad	12	2,588
How to lock down connection and close ssh etc? twirl	02-03-2019 12:26 AM by hafeezisbad	4	674
restricted X session in SELinux or similar tool brainchild	01-31-2019 06:18 AM by jpollard	4	909
Server refused our key - Keyfile authentification from anther user than root webprog24	01-30-2019 06:14 PM by lleb	3	546
[SOLVED] Installing GRUB on encrypted system with multiple drives MrLinuxUser12	01-30-2019 03:57 PM by MrLinuxUser12	1	1,589
Need to simulate syn flood attack with the Linux kernel - 4.13.0-32-generic for demonstration purpose. shivashankar	01-30-2019 11:45 AM by shivashankar	0	746
gigamon opinions hokie1999	01-29-2019 11:44 PM by hokie1999	0	630
Staying On Old Release mortal	01-29-2019 11:16 AM by mortal	2	590
Best practices for file encryption halfpower	01-28-2019 10:05 PM by syg00	2	616
[SOLVED] Strange permissions issues on Ubuntu Studio 18.10 TheEzekielProject	01-27-2019 10:26 PM by TheEzekielProject	4	851
[SOLVED] How to detect malware, keylogers, viruses, rootkits, malicious code, etc GPGAgent	01-25-2019 03:05 AM by FlinchX	6	1,167
Running Commands from PHP via HTTD efetzer	01-23-2019 03:17 PM by savona	2	621
[SOLVED] Monitoring SSHFS connections upnort	01-22-2019 01:16 PM by upnort	9	6,626
Encrypted drive(Mint) - how to install 2nd linux distro (Arch)? Present	01-22-2019 09:51 AM by Present	2	773
[SOLVED] Am I getting this right about the public/private keys? NadEFurY	01-19-2019 11:24 AM by ntubski	13	881
Pls take this short survey on Linux Security (2-3 mins) LinuxSecurityTester	01-19-2019 04:52 AM by fatmac	7	896
[SOLVED] Freeipa + Kerberos + auks rufa	01-16-2019 11:40 AM by rufa	1	1,253
hello folks need to enable iptables ip6 6-6 nat dr.x	01-16-2019 10:02 AM by vincix	6	1,088
Weird Iptables + pppoe + access https websites sites fbsoft	01-15-2019 02:04 AM by fbsoft	2	564
Can anyone recommend any books about advanced Linux/BSD hardening? cerber	01-11-2019 06:23 PM by slac-in-the-box	3	1,029
Iptables --limit Module Question. Recommended Packets' Limit + --m string. Klaipedaville	01-10-2019 12:51 PM by /dev/random	3	811
CIFS mount creation issue djkaveesh	01-10-2019 05:43 AM by michaelk	1	571
SuSEfirewall2, Firewall-cmd and UFW hack3rcon	01-03-2019 11:46 AM by dc.901	8	1,074
Local web server unable to view images file perimssions confusion bulgin	01-02-2019 05:39 AM by ehartman	3	676
[SOLVED] how to set users bin for sudo access? BW-userx	12-31-2018 02:45 PM by BW-userx	5	825
Botnet and limit session. hack3rcon	12-31-2018 10:30 AM by jeremy	6	862
Tcpdump and traffics. hack3rcon	12-31-2018 08:22 AM by TB0ne	14	1,401
Open a port but no service. hack3rcon	12-30-2018 06:55 PM by scasey	4	795
GPG issues suicidaleggroll	12-30-2018 03:44 PM by astrogeek	7	1,383
[SOLVED] Is noreply@mozilla.org a legit email address? linustalman	12-29-2018 04:08 AM by linustalman	13	1,300
setting up a guest account, nopasswd, and quota BW-userx	12-28-2018 01:50 PM by BW-userx	3	995
[SOLVED] Does anyone has tried to enter my system? hack3rcon	12-23-2018 03:37 AM by hack3rcon	11	1,196
How to block Dir harvest? hack3rcon	12-23-2018 03:37 AM by hack3rcon	9	1,241
Need modsecurity rule to block too many POSTs? kenw232	12-22-2018 05:02 PM by kenw232	2	567
Is Linux secure enough? ( 1 2 3 4 ) williambhopal	12-20-2018 01:07 PM by dugan	51	3,574
Critique my firewall ( 1 2 ) PROBLEMCHYLD	12-19-2018 02:43 PM by PROBLEMCHYLD	15	1,317
[SOLVED] cannot login to funtoo linux. UID 0 does not exist. no users or groups seem to exist. whansard	12-19-2018 03:40 AM by whansard	1	1,315
[SOLVED] ssl/tls on gFTP on Slackware 14.2 coiks54	12-18-2018 06:03 PM by coiks54	8	2,920
PPTP kill switch UFW eriche	12-16-2018 08:45 PM by eriche	0	941
SSH disconnection DevGuy	12-16-2018 03:23 PM by DevGuy	3	630
Disallow weak password login YaaY	12-13-2018 06:20 PM by berndbausch	4	1,943
[SOLVED] Trouble with openSSH authentication with id_rsa mfoley	12-13-2018 12:38 PM by MensaWater	7	797
firewalld howto block internet access for a couple of mac addresses? cepicier	12-13-2018 10:25 AM by cepicier	10	4,581
[SOLVED] Try to decrypt a file but the system is reinstall ethereal1m	12-12-2018 08:18 PM by berndbausch	6	640
Format of linux ko modules gglq000	12-12-2018 11:43 AM by lougavulin	1	651
Phishing Emails with no included links theKbStockpiler	12-12-2018 05:11 AM by l0f4r0	13	2,179
[SOLVED] pam.d security limit piobair	12-09-2018 07:55 AM by piobair	2	711
Linux PAM tutorials for beginners fedetask	12-08-2018 04:08 AM by zeebra	1	1,089
guess CRC32 algo qrange	12-07-2018 08:23 AM by ntubski	2	722
[SOLVED] NitroShare and UFW firewall Chris.Bristol	12-07-2018 01:06 AM by ondoho	6	3,775

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