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16%
Monitor your network infrastructure with SNMP
10.04.2015
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Lead Image © lightwise, 123RF.com
add -net 192.168.100.0/24 gw 192.168.2.2 dev eth0 up route add -net 192.168.13.0/24 gw 192.168.2.2 dev eth0 Listing 2 Set Routes $ sudo route add -net 192.168.100.0/24 gw 192
16%
High-performance Python – compiled code and C interface
01.08.2019
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Lead Image © Konrad Bak, 123RF.com
]. It was run in a Jupyter notebook to get the timings. Listing 1 Python First Run Without Numba import numpy def sum(x): total = 0 for i in range(x.shape[0]): total +=x[i] return
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Netcat – The Admin’s Best Friend
20.08.2012
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the -p option: # nc -p 16000 examplehost.tld 22 To add a timeout for latency testing, you could use the -w parameter followed by the number of seconds – 30 seconds, for example: # nc -p 16000 -w 30
16%
Netcat – The admin's best friend
31.10.2025
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© Dmitry Rukhlenko, 123RF.com
the source port of your connection to 16000, you could add the -p option: # nc -p 16000 examplehost.tld 22 To add a timeout for latency testing, you could use the -w parameter with the number of seconds – 30
16%
Proactive Monitoring
11.10.2016
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Lead Image © Tom Wang, 123RF.com
in the long term. Test Environment In the test lab, both Centos 7.1 and Ubuntu 16.04 received version 0.2.11 dated April 20, 2016. The test team simulated two data centers at different locations
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Monitoring IPv6 with Wireshark
09.04.2019
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Lead Image © Suzanne Tucker, 123RF.com
and is usually expressed as eights sets of four hexadecimal digits (known as nibbles, quibbles, or hextets) separated by colons. For example, an IPv6 address looks like this: 2001: 0db8: 1010: 61ab: f005: ba11: 00
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Protect Your Servers with Nmap
23.07.2012
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.13.134.52):            Not shown: 994 filtered ports            PORT    STATE  SERVICE VERSION            22/tcp  open   ssh     OpenSSH 4.3 (protocol 2.0)            25/tcp  closed smtp            53/tcp  open   domain  ISC BIND 9
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Give your servers the once over with Nmap
31.10.2025
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© ragsac, 123RF.com
.nmap.org (64.13.134.52): Not shown: 994 filtered ports PORT STATE SERVICE VERSION 22/tcp open ssh OpenSSH 4.3 (protocol 2.0) 25/tcp closed smtp
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Goodbye cloud VMs, hello laptop VMs
20.06.2022
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Lead Image © Liubomyr Feshchyn, 123rf.com
to the launch command. For example, the command multipass launch -n mycloudvm -c 2 -m 2G -d 10G --timeout 600 Table 1 Multipass launch Argument Action (v1.8.0 default) -n
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ZFS on Linux helps if the ZFS FUSE service refuses to work
07.10.2014
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Lead Image © Luis Louro, 123RF.com
at least outputs some information. What you need is access to the filesystem, which could reside in 06:zfs0; however, to determine the name of the pool, you need a zpool import (Listing 2). The name

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