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48%
Creating an SFTP jail
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Juan Manuel Ordonez, 123RF.com
SyslogFacility AUTH 20 TCPKeepAlive yes 21 UseDNS no 22 UsePrivilegeSeparation yes 23 Subsystem sftp /usr/local/libexec/sftp-server 24 Match Group sftponly 25 ChrootDirectory /export
47%
Network analysis with the Bro Network Security Monitor
05.12.2014
Home »  Archive  »  2014  »  Issue 24: Visua...  » 
Lead Image © Aleksey Mnogosmyslov, 123RF.com
var/opt/bro/logs Subdirectories ls -l /var/opt/bro/logs/ total 244 drwxr-xr-x. 2 root root 4096 Oct 20 00:00 2014-10-19 drwxr-xr-x. 2 root root 12288 Oct 21 00:00 2014-10-20 drwxr-xr-x. 2 root root
47%
Configuring complex environments
07.04.2022
Home »  Archive  »  2022  »  Issue 68: Autom...  » 
Photo by Austin Neill on Unsplash
Hub page: wget https://github.com/mikefarah/yq/releases/download/v4.14.1/yq_linux_amd64 -O ~/bin/yq chmod u+x ~/bin/yq On macOS, you can also import the software with the Homebrew package manager
47%
OpenSMTPD makes mail server configuration easy
08.10.2015
Home »  Archive  »  2015  »  Issue 29: Rescu...  » 
Lead Image © alphaspirit, 123RF.com
effort. Multiple Flavors OpenSMTPD is at home not just on its native OpenBSD, but on Linux (with binary packages for Gentoo, Slackware, Debian, and Arch) and other BSDs, including Mac OS X. The package
46%
Installing and operating the Graylog SIEM solution
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Lead Image © Leo Blanchette, 123RF.com
18 19 Modules pm_buffer 20 MaxSize 102400 # 100 MByte buffer on the hard disk 21 Type disk 22 23 24 25 Modules om_udp 26 Host GraylogServerName 27 Port
46%
Understanding the Status of Your Filesystem
18.06.2014
Home »  HPC  »  Articles  » 
  (  0.05%)  (  0.05% cumulative)    [   1-   2 days]:      0  (  0.00%)  (  0.05% cumulative)    [   2-   4 days]:   4675  (  1.20%)  (  1.25% cumulative)    [   4-   7 days]:    215  (  0.06%)  (  1.31% cumulative)    [   7
46%
Securing email communication with GnuPG
07.10.2025
Home »  Archive  »  2025  »  Issue 89: Autom...  » 
Photo by Amol Tyagi on Unsplash_Key.jpg
output similar to ed25519 2022-08-29 [SC] [expires: 2027-08-20] uid [ultimate] Name name@example.org updgef8corpy81hia1rhd8npqiti6nzf @example.org In the output you will see a 32-character string
46%
Using rsync for Backups
07.01.2014
Home »  Articles  » 
 
of space (20 + 25 + 30), with no doubt lots of duplicated data wasting space and money. The backup world uses a few techniques that differentiate it from replication. The first is called a “full backup
46%
A watchdog for every modern *ix server
25.09.2023
Home »  Archive  »  2023  »  Issue 77: Secur...  » 
Photo by Sudhith Xavier on Unsplash
="chmod --- > RQRDCMNDS="apt-get > chmod 13a17 > mkdir 15a20 > usermod 35c40 < if ! wget "https://mmonit.com/monit/dist/binary/${MONITVER}/monit-${MONITVER}-linux-x64.tar.gz" -O /tmp
46%
Where Does Job Output Go?
11.09.2023
Home »  HPC  »  Articles  » 
performance and cost per gigabyte. Go right along the x-axis for increased capacity. Storage Tiering with Local Node Storage When HPC clusters first became popular, each node used a single disk to hold

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