Detailed topic list for Sysadmin Web

Proxy Reverse proxy * VarnIsh (Forward) proxy * SquId

Problematische WLAN Karten Disclaimer: Die im Nachfolgenden erwähnten Karten sind zwecks Indentifikation zwar mit Herstellernamen angegeben, jedoch soll dies kei...

Process bind statistics cat /var/cache/bind/named.stats awk f ~/dns.stats.awk dns.stats.awk #!/usr/bin/awk BEGIN {a=0;aaaa=0;any=0;cname=0;mx=0;ns=0...

Shutting down Always shut down the FortiGate operating system properly before turning off the power switch to avoid potentially catastrophic hardware problems. T...

How to access packages or updates through a proxy setenv HTTP_PROXY http://10.130.65.2:3128/ setenv HTTPS_PROXY https://10.130.65.2:3128/ cvs q z2 " d:pserver;p...

$ qemu system i386 h QEMU emulator version 1.2.0, Copyright (c) 2003 2008 Fabrice Bellard usage: qemu system i386 options disk_image 'disk_image' is a raw ha...

Quality of service

How to query the bind version dig chaos txt version.bind @10.23.45.67 TXT "9.4.1" Intro By default BIND DNS reveals the version number when queried ...

Radius server * freeradius * RadiusNT * radiusX * OpenRADIUS * XTRadius Commercial * radiator * Cisco ACS * Microsoft IAS * Cistron ...

Quick how to RancherOS and Rancher Waschzettel / blurb RancherOS is a very dockercentric linux OS. 1 boot iso 1 sudo passwd rancher 1 ssh rancher@ 1 ...

Raspberry with a gps clock and a etc RTC * apt get install i2c tools * cat /etc/modules pps gpio * modprobe i2c bcm2708 * modprobe rtc ds1307 ...

Raspberry Pi 4 with NTP, PPS, GPS und Debian bullseye Work in progress * http://www.gregledet.net/computers/building a stratum 1 ntp server with a raspberry pi...

Raspberry Pi * RaspberryZeroUsbDongle * RaspberryNtpServer2021 * RaspberryGpsNtpServer * GpsHeadFlorianTaeger * RaspberryPiCluster

How to setup a Raspberry Pi Cluster with k3s and rancher You have one or more Raspberry Pi 4 1 Install Raspberry Pi OS Lite (64 Bit) with the Raspberry Pi Imag...

Raspberry Pi Zero USB Dongle How to setup a Raspberry Pi Zero as a easy to use Linux Accessory. Links: * https://www.youtube.com/watch?v=IR6sDcKo3V8 * http...

# /etc/ntp.conf, configuration for ntpd; see ntp.conf(5) for help driftfile /var/lib/ntp/ntp.drift # Enable this if you want statistics to be logged. statsdir /va...

rc files / config files for several tools * VimRc * TcshRc * KermIt

Cisco VPN Client Readme file ================== This file describes the contents of the Cisco VPN Client files for the Linux platform Refer to the Bug Navigat...

To use mysql a number of post install procedures need to be made by root. The following steps are derived from the mysql manual (manual.ps, manual.txt or manual_t...

Redhat * HowToViewLastlog * ListAllSystemdServices

Remove the schg flag Use chflags(1) to remove the schg flag. Some files of the base OS are protected by this flag. chflags R noschg /usr/bin

renumber Solaris device instance numbers In /etc/path_to_inst you can renumber the device instance numbers "/pci@0,0/pci8086,340a@3/pci1734,11a9@0" 4 "ixgbe" "/pc...

reset password boot dka100.1.0.6.1 flags 0,1 System will be reset prior to boot. OpenVMS PALcode V1.88 27, Digital UNIX PALcode V1.83 22 FF.FE.FD.FC.FB.FA.F9....

Howto reset a Proxim AccessPoint 4000 Orinico 1 Switch on 2 push reset for 13 seconds (not too much longer) 3 If you have a DHCP Server the AP will fetch...

How to restart the IPM server on the CLI stop # /usr/local/etc/rc.d/ipmserver.sh stop Stopping ipmserver. Waiting for PIDS: 4523. start /usr/local/etc/rc.d/ipmser...

Restore backup on the CLI How to restore a backup on the SOLIDserver via CLI or serial console % su # cd /data1/backup/ # ln s solid ddi.mgmt.corp.net 20141211 0...

Review the post install message Sometimes you miss something in the post install message, after installing a package. pkg install cde Review the post install mess...

Richtfunk Richtfunk meint hier Funk auf lizenzbedürftigen Frequenzen. BAUSTELLE Stephan Pietzko { WirelessLAN }

Risikoanalyse Eine Risikoanalyse ist ein Prozess, bei dem potenzielle Gefahren für ein Unternehmen oder eine Organisation identifiziert und bewertet werden. Der Z...

Risiko Life Cycle Der Risiko Life Cycle bezieht sich auf die Phasen, die ein Risiko durchläuft, von der Identifizierung bis hin zur Beendigung. Der genaue Ablauf ...

How to connect as root to user screen The unprivileged user is running screen and the admin (root) likes to help i.e. connects to the user screen su joe c "scrip...

How to rotate log files on Solaris with logged * http://www.cyber tec.org/2014/10/08/using logadm, a powerful log rotation tool/ * http://docs.oracle.com/cd...

sh: rsync: not found add rsync path=/path/to/rsync to the rsync command root@host:/root rsync avz /var/lib/synctool/synctool.conf 192.168.111.12:/tmp sh: rsyn...

rtorrent Links * https://wiki.archlinux.org/index.php/RTorrent#Create_and_manage_files * http://harbhag.wordpress.com/2010/06/30/tutorial using rtorrent on...

How to build libtorrent / rtorrent 0.12.6 / 0.8.6 on Solaris 10 I used the instructions on page Building rTorrent on Solaris and modified it. Getting rTorrent/li...

How to compile rtorrent on Solaris 10 WORK IN PROGRESS rtorrent compiles, but seems to be unstable. Use the older version 0.12.6/0.8.6 for a stabil version. I...

S/MIME for mails in Mac OS X and iOS Links * http://www.heise.de/ct/artikel/Brief mit Siegel 1911842.html * http://.cacert.org * http://wiki.cacert.org/...

scamgr This board is currently in failsafe mode. Boards in failsafe mode can only perform firmware upgrades. You will now be prompted for the location of the...

scamgr This board is uninitialized. You will now initialize the board. You may either initialize the board with a new configuration or restore the configurati...

scamgr No keystore data returned by card Select Keystore: 1. Create new keystore 2. Load keystore from backup Selection (0 to exit) 1 Non FIPS Keystore Name: ...

Installation of the Sun Crypto Accelerator 6000 software failed Solution The installer script searches in the wrong path. Fix it with a simple symlink cd ~/Su...

How to PXE boot clients via external (ISC) dhcpd Important are next server (the SCCM PXE Server) and filename. And you have to escape the Windows specific backsla...

connect screen to a serial interface If you didn't have kermit or minicom on your system, you can use screen to connect to your serial port. Open the connection ...

sed * SedReplaceNewline * SedPrint10thLine Links * http://www.canbike.org/information technology/sed delete carriage returns and linefeeds crlf.html cat ...

Security $ "A designer knows he has achieved perfection not when there is nothing left to add, but when there is nothing left to take away.": Antoine de Saint Ex...

General Security Bookmarks * https://www.islegitsite.com URL Trust Checker * https://www.smashingsecurity.com Security Podcasts * https://thecyberwire.co...

Security Frameworks merged I like to merge security frameworks as a groundwork for a security concept. I this case I start with NIST CSF and map ISO 27001 and KRI...

Security Models * castle, perimeter, wall, inside, outside * ZeroTrust, Kerberos, BeyondCorp, perimeter less

print every second, third ... 10th line sed n e '0~10p' file # print every 10th line sed n e '1~2p' file # print every other line starting with line 1 Examp...

sed replace newline sed 's/\n/ /g' sed 's/$^/ /g' doesn't work You have to use sed ':a;N;$ba;s/\n/ /g' 1 create a label via :a 1 append the current and next...