Month: January 2013

How to setup OpenVPN with bridging on Ubuntu 12.04

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https://help.ubuntu.com/12.04/serverguide/openvpn.html http://ubuntuguide.org/wiki/OpenVPN_server # Setup your router to forward port 1194 to OpenVPN server or place server in DMZ (all incoming traffic is forwaded to OpenVPN server) # install OpenVPN and bridge utilities apt-get -y install openvpn bridge-utils # setup bridge br0 interface and modify primary interface eth0 (assign eth0 IP address to br0 interface) /etc/network/interfaces … Read more

Postfix SMTP Authentication

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http://linux.about.com/od/ubusrv_doc/a/ubusg29t05.htm http://www.jimmy.co.at/weblog/?p=52 apt-get install sasl2-bin libsasl2-2 libsasl2-modules Configure Postfix to do SMTP AUTH using SASL (saslauthd): postconf -e 'smtpd_sasl_local_domain =' postconf -e 'smtpd_sasl_auth_enable = yes' postconf -e 'smtpd_sasl_security_options = noanonymous' postconf -e 'broken_sasl_auth_clients = yes' postconf -e 'smtpd_recipient_restrictions = permit_sasl_authenticated,permit_mynetworks,reject_unauth_destination' postconf -e 'inet_interfaces = all' echo 'pwcheck_method: saslauthd' > /etc/postfix/sasl/smtpd.conf echo 'mech_list: plain login' > … Read more

Remove all unused kernels in debian based systems

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http://www.unixmen.com/remove-all-unused-kernels-with-1-command-in-debian-based-systems/ sudo apt-get remove $(dpkg -l|egrep '^ii  linux-(im|he)'|awk '{print $2}'|grep -v `uname -r`) If it doesn’t work, try this: dpkg -l 'linux-*' | sed '/^ii/!d;/'"$(uname -r | sed "s/\(.*\)-\([^0-9]\+\)/\1/")"'/d;s/^[^ ]* [^ ]* \([^ ]*\).*/\1/;/[0-9]/!d' | xargs sudo apt-get -y purge http://www.commandlinefu.com/commands/view/10520/remove-all-unused-kernels-with-apt-get