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24%
Greylisting with Postgrey
22.06.2012
Home »  Articles  » 
 
: Qmail Delivery Retry Events Delivery Attempt Seconds D-HH:MM:SS 1 0 0-00:00:00 2 400 0-00:06:40 3 1600 0-00:26:40 4
24%
Managing Linux systems with Spacewalk
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© patrimonio designs, Fotolia.com
can be installed on Red Hat Enterprise (RHEL) [3], Fedora [4], or CentOS [3] Linux. Note that Spacewalk does need a current Java Runtime Version 1.6.0 or newer. You can use the Open JDK for this; Fedora
24%
Understanding Layer 2 switch port security
22.12.2017
Home »  Archive  »  2017  »  Issue 42: Secur...  » 
Lead Image © Taffi, Fotolia.com
:1071867223(0) win 512 98:15:eb:38:f3:c1 c8:d7:c1:61:be:a3 0.0.0.0.30693 > 0.0.0.0.57646: S 1759104040:1759104040(0) win 512 dc:6d:43:15:be:52 99:19:41:22:4e:36 0.0.0.0.29211 > 0.0.0.0.63665: S 481173385
24%
Storage across the network with iSCSI and Synology DiskStation Manager
04.12.2024
Home »  Archive  »  2024  »  Issue 84: Non-R...  » 
Lead Image © Vladimir Nenov, 123RF.com
Attaching an iSCSI Device $ uname -a Linux DANSBOX 6.8.0-35-generic #35-Ubuntu SMP PREEMPT_DYNAMIC Mon May 20 15:51:52 UTC 2024 x86_64 x86_64 x86_64 GNU/Linux $ lsblk NAME MAJ:MIN RM SIZE RO TYPE
24%
Getting your virtual machine dimensions right
04.12.2024
Home »  Archive  »  2024  »  Issue 84: Non-R...  » 
Photo by ROCCO STOPPOLONI on Unsplash
have 26 cores or 52 hyperthreads per NUMA node for the VM. Figure 2 shows a four-socket server with 28 cores per socket and 6TB of RAM. Figure 2: A four
24%
ONIE and Cumulus Linux on a switch
10.04.2015
Home »  Archive  »  2015  »  Issue 26: OpenS...  » 
Lead Image © Brian Kenney, 123RF.com
01 auto br0 02 iface br0 03 bridge-ports swp1 swp2 swp3 swp4 swp5 04 bridge-stp on Because the list would be pretty long for 52 ports, you can also do the following specify
24%
Guacamole: Remote Desktop
04.02.2013
Home »  Articles  » 
 
3 and, in the current version 0.6.2, supports VNC and RDP – although with limited functionality in some cases. For example, you cannot transmit audio data or connect network drives over RDP
24%
The state of open source groupware
09.08.2015
Home »  Archive  »  2015  »  Issue 28: SSD RAID  » 
Lead Image © Andrey Bayda, 123RF.com
appeared in May 2015, also supports multiple servers in an organization for the first time and should therefore solve the scaling problem. Kolab A revamped version of the Kolab groupware tool [3] (Figure 3
24%
Open source multipoint VPN with VyOS
13.12.2018
Home »  Archive  »  2018  »  Issue 48: Secur...  » 
Photo by Damon Lam on Unsplash
version of Vyatta, most notably VyOS [3]. The fork was successful, because VyOS includes all the DMVPN components: dynamic routing with high availability on top. EdgeOS Another player in the Vyatta market
24%
The practical benefits of network namespaces
15.08.2016
Home »  Archive  »  2016  »  Issue 34: Softw...  » 
Lead Image © Morganimation, fotolia.com
1500 qdisc noop state DOWN mode DEFAULT group default qlen 1000 link/ether 52:54:00:02:e3:f1 brd ff:ff:ff:ff:ff:ff $ ip link 1: lo: mtu 65536 qdisc noqueue state UNKNOWN mode

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