fully_encrypted_debian

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

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

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:

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…

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 -

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…

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')

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

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

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…

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…

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…

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

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…

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…

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…

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

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.

debian

anonymous@undisclosed.example.com (Anonymous) — Tue, 25 Apr 2017 15:00:54 +0000

GNU/Debian installieren * Grundinstallation auf Hardware * Installation auf Hardware * Nur im Linux VServer / LXC * Installation auf allen Plattformen * Zusatz-Installation auf Desktops Sonstiges: * zweite Netzwerkkarte mit wechselnder Konfiguration * Debian Paket-Verwaltung * Alarm bei ROOT-Login * GRUB2: einmalig, beim nächsten Start anderen Eintrag starten <- zurück

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

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…

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:

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…

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

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

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).

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…

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…

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

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.

hackerbruecke.net

fully_encrypted_debian

hardware

amavisd

all

spf

config

spamassassin

config

config

lvm_backup

gnarwl

ldap_secure

ldap_conf

slapd_conf

sieve

relayhost

commserv

debian

config

ca

config

gosa_secure

pam

pear_makerpm

sarg

cyrus_secure

monitoring

config

ldap

postfix_secure

sasl

temper1