hackerbruecke.net

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…

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:

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…

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…

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…

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).

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 16:20:43 +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:

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

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

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 ---------- (

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

lvm_backup

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:48:07 +0000

LVM-Backup mit Duplicity Tim Riemenschneider #!/bin/sh # The Archive is encrypted with this (since it is transfered to FTP) export PASSPHRASE="foo" # The FTP-password (not exposed at cmdline export FTP_PASSWORD="bar" # Do a fullbackup weekly OPTIONS="--full-if-older-than 14D" KEEPFULLS=5 # Where to backup to TARGETBASE=ftp://user@server/backups/ #TARGETBASE=file:///tmp/test function create_mysql_snap { /usr/bin/mysql --defaults-extra-file=/et…

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 -

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]

tipps

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 15:00:16 +0000

SSH Tipps SSH-Key auf entferntem Server einspielen ssh-copy-id root@HOSTNAME root@HOSTNAME's password: Now try logging into the machine, with "ssh 'root@HOSTNAME'", and check in: ~/.ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting.

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…

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

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

PHP5 configuration for GOsa and eGroupWare eGroupWare When I added about 250 users to a group in GOsa or in eGroupWare, I encountered the following problem with (open)SUSE 10.2, which I did not encounter with SUSE 10.0: station7: suhosin[373]: ALERT - configured request variable limit exceeded - dropped variable \ 'account_user[]' (attacker '172.16.130.9', file '/srv/www/htdocs/egroupware/index.php')

fully_encrypted_debian

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

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

cpan2rpm

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

cpan2rpm At you can download a RPM-builder for CPAN-Perl-modules. The man-page stats: cpan2rpm [options] The syntax for cpan2rpm requires a single distribution name, which can take one of four different forms: * a CPAN module name (e.g. XML::Simple) - When a module name is passed, the script will ``walk'' search.cpan.org to determine the latest distribution. If an exact match is not found, the CPAN module i…

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…

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.

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)

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:

index

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:59:22 +0000

Logical Volume Manager (LVM) die generelle Struktur bei LVM: Physical Volums (pv) werden in Volume Groups (vg) gruppiert, darin werden dann die Logical Volumes (lv) angelegt. Die entsprechenden Befehle fangen immer mit pv, vg oder lv an. Ein neues Device fuer LVM vorbereiten:

ca

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

Certificate Authority generate certificate and key-files using e.g. one of the follwing * simple OpenSSL CA * Tiny CA * phpki CA trusting your Certificate Authority Ensure there's only one CA certificate in the file from your CA. Normally there is, but ocassionally several are stored in the same file. To list the number of certificates in a file, use the command below. If you get an answer of more than one, then see the section on multiple certificates in one file. The command to ch…

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…

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…

pear_makerpm

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

PEAR and PECL What is PECL? PECL is a repository for PHP Extensions, providing a directory of all known extensions and hosting facilities for downloading and development of PHP extensions. The packaging and distribution system used by PECL is shared with its sister, PEAR.

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

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…

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

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.

linux

anonymous@undisclosed.example.com (Anonymous) — Sat, 11 May 2024 11:50:33 +0000

Debian-Installation * Installation von GNU/Debian auf Hardware oder virtueller Instanz * zweite Netzwerkkarte mit wechselnder Konfiguration securing DNS and Mail * Domain Name System Security Extensions (DNSSEC) mit Bind9 * DNS-based Authentication of Named Entities (DANE) und TLS Authentication record (TLSA) * Sender Policy Framework (SPF) * DomainKeys Identified Mail (DKIM) * Domain-based Message Authentication, Reporting and Conformance (DMARC) * Authenticated Received…

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

gnarwl

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:50:23 +0000

Gnarwl Download GNARWL software from and download package named gnarwl-3.3.tgz Compile GNARWL for LDAP vacations # tar xzvf gnarwl-3.3.tgz # cd gnarwl-3.3 # ./configure # make # make install # make perm Adjust File /usr/local/etc/gnarwl.conf map_sender $sender map_receiver $recepient map_subject $subject map_field $fullname cn map_field $deputy mail server localhost port 389 scope sub login cn=admin,dc=example,dc=org password IveGotASe…

config

anonymous@undisclosed.example.com (Anonymous) — Fri, 15 Aug 2014 20:44:51 +0000

Squid configuration */etc/squid/squid.conf: icp_port 0 htcp_port 0 hierarchy_stoplist cgi-bin ? cache_swap_low 90 cache_swap_high 95 maximum_object_size 4096 KB ipcache_size 1024 ipcache_low 90 ipcache_high 95 fqdncache_size 1024 cache_access_log /var/log/squid/access.log cache_dir ufs /var/cache/squid 240000 32 256 cache_log /var/log/squid/cache.log cache_mem 3000 MB cache_store_log /var/log/squid/store.log emulate_httpd_log off mime_table /etc/squid/mime.conf log_mime_hdrs off useragent_log…

basis

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 14:47:41 +0000

2014-04-11 Debian OS-Basis-Installation auf Blech 1. bei Partitionierung: 2. dann muss die "debconf priority" auf "low" gesetzt werden!!! 3. Partitionierung: auf _jeder_ HDD eine leere Partition anlegen Typ: "gpt" 4. zusaetzlich auf jeder HDD eine

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

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

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

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…

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.