hackerbruecke.net

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…

packliste

anonymous@undisclosed.example.com (Anonymous) — Sun, 07 Apr 2024 11:57:27 +0000

Packliste Liste der zu erledigenden Dinge, zum Packen und Tipps für die Teilnahme an einem Kongress, einer Konferenz oder einer anderen Veranstaltung, wie den Chemnitzer Linux Tagen (CLT), oder der Gulasch Programmiernacht (GPN) in Karlsruhe. ❤️ Danke ✨ Diese Packliste basiert ursprünglich auf der Liste von CongressChecklist von MacLemon, Vienna/Austria

config

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:41 +0000

eGroupWare Version 1.4.001 pre-requisites: * required PHP version 4.3+ (recommended 5+) * php.ini: safe_mode = Off * php.ini: magic_quotes_runtime = Off * php.ini: register_globals = Off * php.ini: memory_limit >= 16M * php.ini: max_execution_time >= 30

slapd_conf

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

/etc/openldap/slapd.conf # The database configuration parameters must appear *after* the "database" # directive, as DB_CONFIG files are 'per backend'. dbconfig set_cachesize 4 0 1 dbconfig set_lg_regionmax 262144 dbconfig set_lg_bsize 2097152 dbconfig set_lg_dir /var/log # Automatically remove log files that are no longer needed. dbconfig set_flags DB_LOG_AUTOREMOVE # # Setting set_tas_spins reduces resour…

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

door-access

anonymous@undisclosed.example.com (Anonymous) — Wed, 07 Jan 2015 19:57:26 +0000

Tür-Zutrittskontrolle Am Anfang stand der Wunsch unserer grossen Tochter einen sicheren Zutritt ins Haus nach der Schule zu ermmöglichen. Sollte Sie den „Schlüssel“ verlieren, sollte dieser mit einfachen Mittel sperrbar und durch ein kostengünstiges Nachfolge-Exemplar ersetzt werden können.

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…

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

config

anonymous@undisclosed.example.com (Anonymous) — Sat, 06 Apr 2024 16:56:19 +0000

Postfix smtpd (smtp + daemon) = server = Postfix receives mail from a client smtp = client = Postfix sends mail to another mailserver Edit /etc/postfix/main.cf queue_directory = /var/spool/postfix command_directory = /usr/sbin daemon_directory = /usr/libexec/postfix mail_owner = postfix smtpd_banner = mail.example.org myhostname = mail.example.org myorigin = example.org mydestination = mail.example.org mynetworks = 127.0.0.0/8, 10.0.0.0/8 alias_maps = hash:/etc/aliases, ldap:virtualaliases…

cookie-banner

anonymous@undisclosed.example.com (Anonymous) — Fri, 03 Jan 2020 21:12:03 +0000

Rechtskonforme Cookie-Banner zu implementieren ist nicht einfach. Denn nach Ansicht des LfDI-BW benötigen Cookies, die ein Nutzertracking über Seiten- und Gerätegrenzen hinweg ermöglichen die: * aktive, * ausdrückliche, * informierte, *

syntax

anonymous@undisclosed.example.com (Anonymous) — Sat, 06 Apr 2024 16:45:31 +0000

Formatting Syntax DokuWiki supports some simple markup language, which tries to make the datafiles to be as readable as possible. This page contains all possible syntax you may use when editing the pages. Simply have a look at the source of this page by pressing

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 …

config

anonymous@undisclosed.example.com (Anonymous) — Mon, 27 Dec 2010 16:20:41 +0000

Apache SSL (https) A special thing for getting Apache2 starting withaut user-interaction is also to store a decrypted key, since without Apache will ask at every start for the password... mv /etc/ssl/private/station7_key.pem /etc/ssl/apache2/private/station7_secure-key.pem openssl rsa -in /etc/ssl/private/station7_secure-key.pem -out /etc/ssl/apache2/private/station7_decrypted-key.pem

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.

fully_encrypted_debian

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

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

postgrey

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 16:02:27 +0000

Greylisting For a overview what greylisting does, have a look at www.greylisting.org/ There are several greylisting daemons for Postfix available. I stick to David Schweikert's Postgrey or to Lionel Bouton's SQLgrey in combination with it's web-interface http://www.vanheusden.com/sgwi/ Postgrey Postgrey greylisting daemon

config

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:52:33 +0000

Cyrus imapd / popd Modify /etc/cyrus.conf to: START { recover cmd="ctl_cyrusdb -r" deliver cmd="ctl_deliver -r" } SERVICES { imap cmd="imapd" listen="imap" prefork=0 # imaps cmd="imapd -s" listen="imaps" prefork=0 pop3 cmd="pop3d" listen="pop3" prefork=0 # pop3s cmd="pop3d -s" listen="pop3s" prefork=0 sieve cmd="timsieved" listen="sieve" prefork=2 # entry must be the same as in th…

postfix_secure

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:56:23 +0000

Postfix with TLS and SSL (smtps) Use a portscanner like „nmap“: station7:/etc/init.d # nmap localhost | grep smtp 25/tcp open smtp -> smtp is only running at port 25! TLS Modify the TLS-settings in /etc/postfix/main.cf #--- SSL/TLS setting ---# smtpd_client_restrictions= permit_tls_clientcerts, permit_sasl_authenticated smtpd_recipient_restrictions = permit_mynetworks, permit_sasl_authenticated, permit_tls_clientcerts, reject_unauth_destination, check_sender_access hash:/etc/…

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

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:

spf

anonymous@undisclosed.example.com (Anonymous) — Tue, 16 Apr 2024 03:02:52 +0000

SPF Standards für das „Sender Policy Framework (SPF)“: RFC 7208 und RFC 7372 v SPF-Version Kennzeichen das einen TXT-Eintrag als SPF-Eintrag identifiziert. z.B. v=spf1 Mechanismen (immer am Ende des Eintrags aufführen!) a: DNS-A-Eintrag z.B. a:example.com ptr: DNS-PTR-Eintrag (reverse Zone) z.B. ptr:example.com all alle zur Domain gehörigen Hostst z.B. -all mx: abweichender Mailexchanger z.B. mx:mail.example-abc.com ip4: Angabe einer oder mehrerer IPv4-Adressen z.B. ip4:192.100.1…

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

commserv

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 15:00:45 +0000

This documentation is work in progress, no liability for correctness can be given! Communications-Server Motivation Because I had to look for a log time around the Internet, asking a lot of questions on mailing-lists, reading books and talking to friends for configuring my commserv, thus having quite a bit of hassle getting things working, I'd like give my experiences back to the comunity.

dmarc

anonymous@undisclosed.example.com (Anonymous) — Tue, 16 Apr 2024 03:04:34 +0000

DMARC Standards für „Domain-based Message Authentication, Reporting and Conformance (DMARC)“: RFC 7489 DMARC dient dem Reporting von E-Mail-Kommunikation und ist eine ergänzende Maßnahme zu den Verfahren DKIM und SPF. Im Folgenden sind die gängigen Tags aufgeführt, die in DMARC (TXT)-Records verwendet werden:

gosa_secure

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

force GOsa using ldaps Change the server-configuration in the „location“-section of /etc/gosa.conf from: server="ldap://localhost:389" to: server="ldaps://localhost:636" tls="true"

pam

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

/etc/ldap.conf (for PAM) # # This is the configuration file for the LDAP nameservice # switch library, the LDAP PAM module and the shadow package. # # Your LDAP server. Must be resolvable without using LDAP. host 127.0.0.1 # The distinguished name of the search base. base dc=example,dc=com # The LDAP version to use (defaults to 3 # if supported by client library) ldap_version 3 # Hash password locally; required for University of # Michigan LDAP server, and works with Netscape # Directory Ser…

cyrus_secure

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:52:44 +0000

TLS, IMAP over SSL (imaps) and pop3 over SSL (pop3s) TLS Modify / append the TLS-settings in /etc/imap.conf: #--- SSL/TLS setting ---# tls_ca_path: /etc/ssl/certs tls_ca_file: /etc/ssl/certs/ca_cert.pem tls_cert_file: /etc/ssl/certs/station7_cert.pem tls_key_file: /etc/ssl/private/station7_key.pem

ssh-smtp-tunnel

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:57:08 +0000

SMTP-over-SSH-Tunnel Um zwei SMTP-Server (z.B. Mailserver im Heim-Netz zu Mailgateway bei Provider/Hoster) sicher miteinander zu verbinden, gibt es verschiedene Möglichkeiten. OpenVPN-Tunnel Eine Möglichkeit ist, ein OpenVPN-Tunnel zwischen beiden Servern.

tipps

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

Postfix Tipps und Tricks Mails aus Mailqueue löschen alle Mails des Benutzers station7@example.com aus der Mailqueue löschen: mail:~# mailq | tail -n +2 | grep -v '^ *(' | awk 'BEGIN { RS = "" } { if ($7 == "station7@example.com") print $1 }' | tr -d '*!' | postsuper -d -

start

anonymous@undisclosed.example.com (Anonymous) — Sat, 06 Apr 2024 17:26:44 +0000

hackerbruecke.net [Hackerbrücke mit Christoph] Warum Hackerbücke? Die Hackerbrücke ist für mich Symbol und Inbegriff meines Einstiegs in die Computerwelt. Schon 1984 faszinierten mich Erhard Thomas' (a.k.a. n0by) Glossen „Die Hackerbrücke“ in der Zeitschrift „DOS International

brandmelder

anonymous@undisclosed.example.com (Anonymous) — Sat, 03 Jan 2015 17:46:35 +0000

Brandmelder pimpen * * * * <- zurück

dnssec

anonymous@undisclosed.example.com (Anonymous) — Tue, 16 Apr 2024 03:00:36 +0000

DNSsec mit Bind9 Standards für die „Domain Name System Security Extensions (DNSSEC)“: RFC 4033, RFC 4034, RFC 4035, RFC 5011 und RFC 5155. Entropie zur Schlüsselgenerierung Um genügend Entropie für die Erzeugung der Schlüssel zur Verfügung zu haben, sollte z.B.

dokuwiki

anonymous@undisclosed.example.com (Anonymous) — Mon, 15 May 2023 17:13:12 +0000

DokuWiki wiki:dokuwiki DokuWiki is a simple to use and highly versatile Open Source wiki software that doesn't require a database. It is loved by users for its clean and readable syntax. The ease of maintenance, backup and integration makes it an administrator's favorite. Built in

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:

ldap_conf

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

/etc/openldap/ldap.conf # # LDAP Defaults # # See ldap.conf(5) for details # This file should be world readable but not world writable. # 21.07.2006, chhaas BASE dc=example,dc=com URI ldap://127.0.0.1 ### #SIZELIMIT 12 #TIMELIMIT 15 #DEREF never #--- SSL/TLS setting ---# TLSCipherSuite ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+SSLv2:+EXP #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 /e…

lightsquid

anonymous@undisclosed.example.com (Anonymous) — Fri, 15 Aug 2014 20:45:40 +0000

Lightsquid-Tool your access.log look slightly different from standart. may be you use CUSTOM log record. at and of standart record in you log you has addition field look like: [User-Agent: TMhtload/1.32.00.1008\r\nAccept: */*\r\nHost: cm-t.activeupdate.trendmi

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

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

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).

ldap

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:55:50 +0000

using LDAP /etc/postfix/ldap-aliases.cf: server_host= ldaps://localhost:636 server_port= 636 start_tls = no tls_ca_cert_file = /etc/ssl/postfix/certs/ca_cert.pem tls_ca_cert_dir = /etc/ssl/postfix/certs/ tls_cert = /etc/ssl/postfix/certs/station7_cert.pem tls_key = /etc/ssl/postfix/private/station7_key.pem #tls_random_file = dev:/dev/urandom tls_cipher_suite = ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:+SSLv3:+EXP version= 3 bind= no timeout= 120 search_base= dc=example,dc=com query_filter = (&(object…