all

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:46:38 +0000

2014-08-08 zuerst „Debian OS-Basis-Installation auf Blech“ durchfuehren!!! auf allen Server-Instanzen („Blech“, Linux VServer, LXC): ### Proxy der UKBW fuer die Installations-Shellsitzung setzen: export http_proxy=„“ ### LiHAS GPG-Key importieren: wget -O -

hardware

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:46:57 +0000

2014-06-17 zuerst „Debian OS-Basis-Installation auf Blech“ durchfuehren!!! zusaetzlich „auf dem Blech“: ### Proxy der UKBW fuer die Installations-Shellsitzung setzen: export http_proxy="http://proxy01.ukbw.de:3128/" ### LiHAS GPG-Key importieren:

config

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:43 +0000

GOsa GOsa is a GPL'ed PHP based administration tool for managing accounts and systems in LDAP databases. It administers users and groups, mail distribution lists, thin clients, applications, phones and faxes. Get GOsa from: Project homepage:

spamreport

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:54:58 +0000

Spamreport spamcheck.sh #!/bin/bash ######################################################### # UKBW-Spam-Report, 2007-05-01, chhaas, IuK / Netzwerke # ######################################################### #set -o verbose ######## # ToDo # ######## # - printvariablen bei "grep X-Spam-Status:" korrigieren # - Mail an antispam@uk-bw.de zusammenfassen: 1 Mail die alle Spammails inkl. Empfaenger beinhaltet # - Variablen fuer FROM: und RETURN-PATH einrichten # - evtl. SpamAssassin Spam-T…

fully_encrypted_debian

anonymous@undisclosed.example.com (Anonymous) — Sat, 23 Sep 2017 22:25:30 +0000

Full disk encryption with LUKS (inklusive /boot) Referenzen: * * * * * *

sieve

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:52:56 +0000

Sieve * * * * Sieve and SSL / TLS timsieved allows for SSL on connect (like https, imaps, or pop3s), only STARTTLS. So you have to wrap it in an stunnel (www.stunnel.org), which is a another story ... Have a look at this: Testi…

openssl_ca

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:44 +0000

simple OpenSSL Certficate Authority Create Certificate Authority station7:/etc # station7:/usr/share/ssl/misc # ./CA.sh -newca CA certificate filename (or enter to create) Making CA certificate ... Generating a 1024 bit RSA private key .....++++++ .....................................++++++ writing new private key to './demoCA/private/./cakey.pem' Enter PEM pass phrase: Verifying - Enter PEM pass phrase: ----- You are about to be asked to enter information that will be incorporated into your c…

tipps

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 15:00:06 +0000

SED-Tipps Kommentare mit # und Leerzeilen herausfiltern: sed -e '/^#/d' -e '/^$/d' Kommentar entfernen, bei dem ausschliesslich Leerzeichen oder Tabulatoren vor der Raute stehen: sed -e '/^*#/d' -e '/^$/d' Eingabe-Datei > Ausgabedatei Löschen aller Zeilen, die höchstens Leerzeichen beinhalten:

relayhost

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:33 +0000

Postfix configuration for a relayhost (MX) / Anti-SPAM-/UCE-settings smtpd (smtp + daemon) = server = Postfix receives mail from a client smtp = client = Postfix sends mail to another mailserver used Ports: 10023/tcp: postgrey 10024/tcp: amavisd-new 10025/tcp: policyd-weight

paketverwaltung

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:47:19 +0000

Debian-Paketverwaltung: Debian-Paket selbst bauen: ---------- \ß Anzeige aller installierten Pakete ---------- (

ldap_secure

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:43 +0000

TLS and LDAP over SSL (ldaps) Modifying /etc/openldap/ldap.conf Modify / append the TLS-settings: #--- SSL/TLS setting ---# TLSCipherSuite ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+EXP TLS_CACERT /etc/ssl/certs/ca_cert.pem TLS_CERT /etc/ssl/certs/station7_cert.pem TLS_KEY /etc/ssl/private/station7_key.pem TLS_REQCERT demand

gosa2egw

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:43 +0000

patching GOsa for seamless eGroupWare integration "-------- Original-Nachricht --------" Betreff: Re: [GOsa] gosa+samba3.schema conflicts with evolutionPerson.schema Datum: Tue, 5 Jun 2007 15:23:31 +0200 Von: Cajus Pollmeier An: GONICUS site administration project These are from two different RFCs, I guess. Bad luck. GOsa uses dateOfBirth internally. So, the simpliest way would be to remove the definition from the gosa+samba3.schema and add the ali…

monitoring

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:58:04 +0000

Monitoring email-monitoring * create „/var/lib/rrd“ Mailgraph mailgraph is a very simple mail statistics RRDtool frontend for Postfix that produces daily, weekly, monthly and yearly graphs of received/sent and bounced/rejected mail (SMTP traffic).

desktop

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:46:23 +0000

2013-12-27 fuer Desktops zusaetzlich: kde-full lightdm-kde-greeter alsamixergui amarok audacity audacity-data bc chromium-browser / chromium chromium-browser-l10n / chromium-l10n chromium-codecs-ffmpeg-extra cifs-utils clusterssh cryptsetup cryptsetup-bin cups cups-browsed cups-bsd cups-client cups-common cups-daemon cups-filters cups-ppdc dnsmasq duplicity ethtool fuse gnupg gnupg-agent gnupg2 gpgsm gpgv hplip hplip-data hplip-gui htop ifupdown / ifupdown-scripts-zg2 keepassx kgpg libre…

pfs

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:15 +0000

Postfix Perfect Forwarding Secrecy (PFS) openssl gendh -out /etc/postfix/dh_512.pem -2 512 openssl gendh -out /etc/postfix/dh_1024.pem -2 1024 postconf -e "smtpd_tls_dh1024_param_file = /etc/postfix/dh_1024.pem" postconf -e "smtpd_tls_dh512_param_file = /etc/postfix/dh_512.pem" postconf -e "smtpd_tls_eecdh_grade = strong" postconf -e "tls_preempt_cipherlist = yes" postconf -e "smtpd_tls_loglevel = 1" postconf -e "smtp_tls_loglevel = 1" postfix reload

smtp-authentication

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:50 +0000

SMTPd- / SMTP-authentication SMTPd-authentication SASL must be configured! in /etc/postfix/main.cf: smtpd_sasl_auth_enable = yes smtpd_sasl_security_options = noanonymous broken_sasl_auth_clients = yes smtpd_recipient_restrictions = ... permit_sasl_authenticated

spamassassin

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:58:39 +0000

SpamAssassin SA-config-genarator: /etc/mail/spamassassin/local.cf: # SpamAssassin config file for version 3.x # NOTE: NOT COMPATIBLE WITH VERSIONS 2.5 or 2.6 # See http://www.yrex.com/spam/spamconfig25.php for earlier versions # Generated by http://www.yrex.com/spam/spamconfig.php (version 1.50) # How many hits before a message is considered spam. required_score 5.0 # Encapsulate spam in an attachment (0=no, 1=yes, 2=safe) report_safe …

sign

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:53:39 +0000

Domain Key Identified Mail outbound - ORIGINATING - signieren DKIM basiert auf asymetrischer Verschlüsselung mit public- und private-Key. Das Key-Paar wird mit folgender Syntax erzeugt: amavisd genrsa [Anzahl der Bits für den Schlüssel]

neues_certificate

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:48:23 +0000

Neues Zertifikat für ejabberd installieren neues PEM-File erzeugen: * in CA Certificate und private-Key erzeugen und nach /etc/ejabberd auf jabber-Server kopieren * auf ejabberd-Server in cat jabber@ukbw.de-key.pem > ejabberd.pem cat jabber@ukbw.de-cert.pem >> ejabberd.pem

sarg

anonymous@undisclosed.example.com (Anonymous) — Fri, 15 Aug 2014 20:46:20 +0000

SARG /etc/crontab: ### SQUID-Monitoring via Sarg: 00 06-19/1 * * * root /usr/local/chhaas-skripts/sarg-reports.sh today > /dev/nul 00 00 * * * root /usr/local/chhaas-skripts/sarg-reports.sh daily > /dev/nul 00 01 * * 1 root /usr/local/chhaas-skripts/sarg-reports.sh weekly > /dev/nul 30 02 1 * * root /usr/local/chhaas-skripts/sarg-reports.sh monthly > /dev/nul

amavisd

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:57:55 +0000

AmaVisd-new /etc/amavis/amavisd.conf: use strict; # a minimalistic configuration file for amavisd-new with all necessary settings # # see amavisd.conf-default for a list of all variables with their defaults; # see amavisd.conf-sample for a traditional-style commented file; # for more details see documentation in INSTALL, README_FILES/* # and at http://www.ijs.si/software/amavisd/amavisd-new-docs.html # COMMONLY ADJUSTED SETTINGS: # @bypass_virus_checks_maps = (1); # uncomment to DI…

pflogsum

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:02 +0000

Postfix-Reporting mit Pflogsum apt-get install pflogsum /usr/local/bin/postfix_report.sh #!/bin/bash /usr/sbin/pflogsumm -d yesterday --problems_first /var/log/mail.log.1 > /tmp/pflogsumm /usr/bin/mailx -s "Automatischer Postfix-Report von $(hostname)" -r postfix-admin@station7.example.de postfix-admin@station7.example.de < /tmp/pflogsumm

config_test

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:55:27 +0000

Postfix-Konfiguration testen Die Postfix-Konfigurtation sollte auf alle fälle vor der Produktivnahme ausgiebig getestet und das Verhalten beobachtet werden! Test von main.cf und master.cf Test der Datei- und Verzeichnisrechte, sowie die Syntax von main.cf und master.cf von Postfix:

temper1

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:59:45 +0000

Temperaturmessungen mit dem TEMPer1 USB sensor Vor einiger Zeit begann ich zuhause mir einen kleinen Serverraum einzurichten - mein Datenklo ;-). In diesem Serverraum sollte natürlich auch die Raumtemperatur mit Icinga oder Nagios überwacht werden. - Natürlich gibt es verschiedene quasi out-of-the-box Lösungen, wie z.B.

hotkeys

anonymous@undisclosed.example.com (Anonymous) — Wed, 03 Sep 2014 18:12:46 +0000

Liste der Tastenkürzel, die einem in der Bash zur Verfügung stehen: Die folgende Auflistung fasst die wichtigsten in der Bash verfügbaren Tastenkombinationen zusammen. - Curser oben und Cursor unten : Durch die zuletzt eingegebenen Kommandos scrollen

todo

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:42 +0000

ToDo Things, that have to be documented: * generating the decrypted SSL-key with OpenSSL-CA * use of TinyCA and phpki-CA * Postfix: main.cf and master.cf * implement in email -> Postfix -> SMTPd- / SMTP-Authentication

root-alarm

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:47:28 +0000

email-Alarm bei ROOT-Login: # apt-get install mailx # cat << EOF > /root/.bashrc echo 'ALARM - Root-Login auf Maschine' $(hostname) 'am:' $(date) $(who) | mail -s „ALARM: Root-Login auf Maschine $(hostname) von $(who | grep root | cut -d'(' -f2 | cut -d')' -f1)

operation

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:53:27 +0000

AmaViSd-new Operation emails aus der Quarantäne releasen: Wenn AMaViSd emails in die Quarantäne verschiebt, erhält man emails dieser Form: Betreff: BANNED contents (text/x-msdos-batch,.asc,bacula_after_failure.cmd) in mail FROM LOCAL [...] No viruses were found. Banned name: text/x-msdos-batch,.asc,bacula_after_failure.cmd Content type: Banned Internal reference code for the message is 11606-02/IJvAMUUAzNma [...] The message has been quarantined as: I/banned-IJvAMUUAzNma The message W…

spf

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:59 +0000

Postfix und das Sender Policy Framework (SPF) Das Sender Policy Framework - früher auch Sender Permitted From genannt -, soll das Fälschen des email-Absenders in einer E-Mail auf SMTP-Ebene erschweren. Mithilfe eines SPF-Generators, z.B. oder

sasl

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:42 +0000

SASL A very conveniant way of configuring the Simple Authentication and Security Layer (SASL) is to use the Pluggable Authentication Modules (PAM), since it can use diffrent authentication sources like ldap or /etc/passwd - thus SASL is everything but simple

hackerbruecke.net

all

hardware

config

spamreport

fully_encrypted_debian

sieve

openssl_ca

tipps

relayhost

paketverwaltung

ldap_secure

gosa2egw

monitoring

desktop

pfs

smtp-authentication

spamassassin

sign

neues_certificate

sarg

amavisd

pflogsum

config_test

temper1

hotkeys

todo

root-alarm

operation

spf

sasl