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9%
Cgroups for resource management in Linux
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Photographer, 123RF.com
in the cgroup. You can then use the tc with the group. Start by defining the classID for the cgroup: echo 0x00100001 > /cgroup/net_cls/libvirt/qemu/guest/net_cls.classid This hexadecimal number comprises two
9%
Targeted defense against brute force attacks
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Andrii IURLOV, 123RF.com
, most likely, (3/2) x 15 seconds. Finally, -s defines the number of seconds to wait before sshguard "forgets" the attacker's IP address. The line sshguard -l /var/log/auth.log -s 20 instructs sshguard
9%
Neglected IPv6 features endanger the LAN
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© Stanislaw Tokarski, 123RF.com
support to its Windows Vista and Windows Server platforms in 2007. Linux in all its variants and Apple's Mac OS X followed suit; thus, the new protocol spread with each new installation. On all ... IPv6 is establishing itself in everyday IT life, and all modern operating systems from Windows, through Mac OS X, to Linux have it on board; but if you let IPv6 introduce itself into your environment
9%
Manage your servers with System Center Essentials
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Kheng Ho Toh, 123RF.com
-fledged devices. So, if you purchase 20 licenses and need to monitor 20 physical and 30 virtual servers on the network, you can't add any more license packages, because you have reached the upper limit
9%
Programming with Go
31.10.2025
Home »  Archive  »  2012  »  Issue 11: Cloud...  » 
© Dimitar Dimitrov, 123RF.com
, C++, or Java: var x float64 Variable names can start with any character regarded as a letter in the Unicode standard. The := operator lets you define and initialize variables in one fell swoop
9%
Enterprise communication with IRC
30.11.2025
Home »  Archive  »  2012  »  Issue 10: Traff...  » 
© anyka, 123RF.com
; 12 13 /* sendq: servers need a higher sendq as they send more data */ 14 sendq=2 megabytes; 15 }; Additionally, ircd.conf lacks a block that allows connections to other servers
9%
Agile system management in large-scale environments with Func
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
bowie15, 123RF
/lib/certmaster/peers 11 setfacl -d -R -m 'u:foobar:rwX' /var/lib/func 12 setfacl -R -m 'u:foobar:rwX' /var/lib/func 13 setfacl -d -R -m 'u:foobar:rwX' /var/log/func/ 14 setfacl -R -m 'u:foobar:rwX' /var
9%
Igel thin clients
30.11.2025
Home »  Archive  »  2010  »  Issue 2: Backup...  » 
Dana Bartekoske, 123RF
.msft in the reservation name with your own domain.The following command sets DHCP option 12 with a value of PC4711.contoso.msft for the reservation just created for the IP address 10.10.47.11. Option 12 is the hostname
9%
A first look at Apache 2.4: Web server for the cloud
30.11.2025
Home »  Archive  »  2011  »  Issue 3: Are yo...  » 
Helder Almeida, 123RF.com
for their documentation. Although at times it's a bit terse, it is very complete. The Apache 2.4 release, although a fairly modest bump compared with the move from the 1.x series to 2.0.x, is a pretty important release
9%
Tuning your filesystem's cache
30.11.2025
Home »  Archive  »  2012  »  Issue 07: Xen v...  » 
experience [2]. A good tool for cache control is vmtouch [3], which is at home on most Linux 2.6, FreeBSD 7.x, or Solaris 10 kernels; mileage may vary on other *nix variants. Expect partial functionality

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