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Installing and operating the Graylog SIEM solution
13.12.2018
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Lead Image © Leo Blanchette, 123RF.com
. The pwgen command generates a password and encrypts with sh256sum: pwgen -N 1 -s 100 echo -n | sha256sum The encrypted password is then assigned to the parameter root_password_sha2. Table 1 gives
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Network monitoring with Icinga and Raspberry Pi
17.02.2015
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Lead Image © AndreaDanti, 123RF.com
need to make a few more purchases. The following list indicates what you will need to complete this project: Raspberry Pi Model B+. 5V, 1A USB power supply. 4GB MicroSD card (minimum); I
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ZAP provides automated security tests in continuous integration pipelines
23.08.2017
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Lead Image © Galina Peshkova, 123RF.com
03736 bash zap@03736c2a2088:/zap$ x11vnc --forever --usepw --create Enter VNC password: Verify password: Write password to /home/zap//.vnc/passwd? [y]/n y Password written to: /home
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Error-correcting code memory keeps single-bit errors at bay
14.11.2013
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Lead Image © Igor Stevanovic, 123RF.com
of an uncorrectable error by factors of 9-400. Uncorrectable errors following a correctable error are still small at 0.1%-2.3% per year. + The incidence of correctable errors increases with age
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Acquiring a Memory Image
20.05.2014
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Lead Image © lightwise, 123RF.com
a hash of the input and also of any outputs (specified using hof=, hofs=, phod=, or fhod=. ALGORITHM options include md5, sha1, sha256, or sha512. hashlog=FILE – Log total hashes and piecewise hashes
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Security first with the Hiawatha web server
11.04.2016
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Lead Image © Tatiana Popov, 123RF.com
toolkit for joomla UrlToolkit { ToolkitID = joomla Match base64_encode[^(]*\([^)]*\) DenyAccess Match (<|%3C)([^s]*s)+cript.*(>|%3E) DenyAccess Match GLOBALS(=|\[|\%[0-9A-Z]{0,2}) Deny
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Posteo, Mailbox.org, Tutanota, and ProtonMail compared
10.04.2015
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Lead Image © Kirill Bodrov, 123RF.com
Qualys SSL-Test A+ Qualys SSL-Test A Syss GmbH Audits [2] TLS 1.2 Yes Yes Yes Yes HTTPS/HSTS Yes Yes Yes Yes
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Transport Encryption with DANE and DNSSEC
17.02.2015
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Lead Image © nerhuz, 123RF.com
/smtp[14944]: \ Verified TLS connection established to dane.sys4.de[194.126.158.134]:25: \ TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits) The admin should set the smtp
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How to configure and use jailed processes in FreeBSD
14.03.2013
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© Corina Rosu, 123RF.com
command: # sockstat | grep "\*:[0-9]" The description for rc.conf(5) lists the services that need to be bound to a fixed IP address via parameters. One example is the inetd service: inetd_flags="-wW -a
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Nmon: All-Purpose Admin Tool
17.12.2014
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to see what might be causing the load. Figure 8: Disk stats and top processes. One last option I want to cover is n , for network stats. Figure 9

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