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Linux Security

The Linux operating system, in all its flavors, has its own share of security flaws that allow intrusions, but there are various mechanisms by whic...

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Restrict ftp to single directory

11

Hi

I am trying something which should be pretty trivial but in practice seems to be rather difficult

Article

How to set up a TOR Transparent Proxy

18
Hello EE,

Today we will learn how to send all your network traffic through Tor which is useful to…
Troubleshooting Solution

CVE-2021-3156 sudo vulnerability: details & workaround

bysunhux
15
Vulnerability affects Sudo legacy versions (1.8.2 to 1.8.31p2) and all stable versions (1.9.0 to …
Troubleshooting Solution

Compressing ISO file

76
Hi ...
I am trying to create an ISO file with grub-mkrescue command and trying to compress …
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Permission issue

22
Hi,
What to adjust, due to the error below?

[smb01@28-218-217-172-on-nets samba]$ cp …
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centos linux

bygudii9
65
Hi,

I want ot learn and practive Linux commands on my windows 10 laptop. how to instal and set up…
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Issue to set up sqlsrv

8
Hi,
I did the setup, per steps below

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Identify Linux loader

67
I have a special Linux HDD used in a satellite receiver with hard disk recording feature Panasonic …
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allow user for readonly config or readonly  commands  in linux and prevent editing or changing any files config or linux settings

byA A
7
Hello experts
I have user that have root access by switching sudo su - to root as I want to withdraw …
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Installing the OSSEC security tool on Debian 10.7

byHenry
8
Hi, I need to install the OSSEC security tool on Debian 10.7 but without a internet connection. Can …
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Receive error when trying to change to root

byA A
9
Hi experts

kindly be informed that I receive this error when try to do sudo su

sudo:unable to …
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does /etc/passwd of Oracle Linux date or timestamp get changed each time a linux user's password is changed/reset

bysunhux
5
Our Oracle Linux's  /etc/passwd fields (for one of the user id)
looks like the following: don't see …
Troubleshooting Solution

Issue to building connection

55
Hi,
Iget the problem as attached, while building the connection to MYSQL but the relevant database …
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remove user form staff group in unix

9
hi i did this i what to remove the user from staff group
calapp@hostname:/$ sudo usermod -G oracle …
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zmeu infection?

49
Yesterday it appears our RHEL 6.4 server was compromised.  It was spewing so much traffic it was …
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sendmail TLS not working right

byMark
45
I've installed a new GoDaddy certificate on my Linux server and supposedly configured sendmail with …
Troubleshooting Solution

NTP Restriction on Ubuntu 14.0.4

44
Hello Experts,

I've setup and configured the NTP on Ubuntu Server 14.0.4.
I want to put …
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centOS

41
I have a CentOS 4/5/6 (32-bit) Linux box, my emails with pdf are getting quarantined everytime.

Troubleshooting Solution

Issue to Ubuntu

33
Hi,
What should be corrected, due to attached screenshot after having started Ubuntu Version 20.04?

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