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  • Article (Print) (23)
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100%
ARP cache poisoning and packet sniffing
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© elisanth, 123RF.com
Destination MAC address Listing 1 Nemesis arp Packets 01 $ while true 02 > do 03 > sudo nemesis arp -v -r -d eth0 -S 192.168.1.2 -D 192.168.1.133 -h 00:22:6E:71:04:BB -m 00:0C:29:B2 ... 6
97%
Checking password complexity with John the Ripper
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
from compromised systems is John the Ripper (John). John is a free tool from Openwall [1]. System administrators should use John to perform internal password audits. It's a small (<1MB) and simple ... 6
96%
An IT nomad's daily diary
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Kateryna Pruchkovska, 123RF.com
is adding these entries to the Cobbler database. A typical example looks something like Listing 1. Listing 1 System Settings 01 # cobbler system add --name=foo --profile=ksprofile-devel-rhel6 ... 6
96%
Beyond monitoring: Mathematical load simulation in Perl
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© kudryashka, 123RF.com
100 0.067 95 23 5 10 99 0.099 96 22 6 20 94 0.210 97 22 6 Unfortunately ... 6
96%
Workshop: Container virtualization with LXC on Ubuntu 10.04
30.11.2025
Home »  Archive  »  2011  »  Issue 6: Perfor...  » 
© Tormod Rossavik, 123RF.com
.network.type = veth 04 lxc.network.flags = up 05 lxc.network.link = br0 06 lxc.network.hwaddr = 08:00:12:34:56:78 07 #lxc.network.ipv4 = 0.0.0.0 08 lxc.network.ipv4 = 192.168.1.69 09 lxc.network.name = eth0 10 lxc ... 6
70%
Tested: Autoconfiguring IPv6 clients
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Benis Arapovic, 123RF.com
, the MAC address (e.g., 00:11:22:33:44:55) is split down the middle, and two bytes containing FF:FE are inserted. This gives you 64 bits. If the basis is a globally unique address (which should be the case ... Most clients on a network need both an address and some environmental information such as a name server or a web proxy. This article investigates whether a recent operating system on an IPv6-only LAN ... IPv6 ... Tested: Autoconfiguring IPv6 clients
32%
A simple approach to the OCFS2 cluster filesystem
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Kheng Ho Toh, 123RF.com
_dlm] root 3467 7 0 20:07 ? 00:00:00 [o2net] root 3965 7 0 20:24 ? 00:00:00 [ocfs2_wq] root 7921 7 0 22:40 ? 00:00:00 [o2hb-BD5A574EC8] root 7935 7 ... The vanilla kernel includes two cluster filesystems: OCFS2 has been around since 2.6.16 and is thus senior to GFS2. Although OCFS2 is non-trivial under the hood, it is fairly simple to deploy.
30%
Monitoring network computers with the Icinga Nagios fork
30.11.2025
Home »  Archive  »  2010  »  Issue 1: System...  » 
© Alterfalter, 123RF.com
notification_interval 60 16 notification_options d 17 } 18 19 # Fileserver 20 define host{ 21 host_name fileserver 22 alias Fileserver 23
29%
Network analysis with Wireshark
30.11.2025
Home »  Archive  »  2011  »  Issue 5: Pen Te...  » 
© Reinhard Eisele
-click the packet details in the packet list to add protocol fields. The release of Libpcap 1.0.0 added the ability to define the buffer size for recording and to view JPG files directly in Wireshark. Version 1.6 ... An administrator can only gain useful insights from network analysis if they understand the underlying procedures and protocols. The new version of Wireshark, 1.6, formerly known as Ethereal, can
27%
Monitor your nodes with collectl
30.11.2025
Home »  Archive  »  2012  »  Issue 09: Windo...  » 
© nobeastsofierce, 123RF.com
YZCD 03 # DaemonOpts: -f /var/log/collectl -r00:00,7 -m -F60 -s+YZCD --iosize 04 ################################################################################ 05 # Collectl: V3.6.1-4 HiRes: 1 Options

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