Category Archives: Linux

Radicale IMAP Auth on Debian 9 (Stretch)

Radicale 2.1 CalDAV may fail with the following error messages logged: radicale.log: [SSL: SSLV3_ALERT_HANDSHAKE_FAILURE] sslv3 alert handshake failure (_ssl.c:720) syslog: … rip=127.0.0.1, lip=127.0.0.1, TLS handshaking: SSL_accept() failed …… imap-login: Disconnected: Inactivity (no auth attempts in 180 secs): user=<>, rip=127.0.0.1, lip=127.0.0.1, TLS handshaking This looks like an incompatibility between OpenSSL and Python urllib regarding SSL connections. … Continue reading Radicale IMAP Auth on Debian 9 (Stretch)

PXE Booting Guide

Configure DHCP ServerConfiguration below is for isc-dhcp-server on Linux: # For hardware LAN Boot ROMs:option tftp-server-address 192.168.1.200;filename “pxelinux.0”;# For HyperV Guests:# option 60 = client identifieroption dhcp-client-identifier “PXEClient”;# option 66 = TFTP server nameoption tftp-server-name “192.168.1.200”;# option 67 = Bootfile nameoption bootfile-name “pxelinux.0”; 2. Configure TFTP ServerOn Linux, tftp-hpa is recommended, with a directory structure … Continue reading PXE Booting Guide

OXO Connect to Linux with Strongswan

Strongswan is a IPsec provider for Linux. It can be used to provide a responder endpoint for connection to phone systems using OXO Connect. Below are the key settings that have been tested to work with a OXO Connect PSK-PSK profile, using Debian Linux: /etc/ipsec.conf: conn ike2psk-clientA auto=add keyexchange=ikev2 ike=aes256-sha2_256-modp2048! # modify to match esp=aes256-sha2_256-modp2048! … Continue reading OXO Connect to Linux with Strongswan

Compiling Xfce 4.14, on Debian Buster

To compile Xfce 4.14 start with the build instructions here: https://docs.xfce.org/xfce/building Below are some notes to help build and run on Debian 10 (Buster). This install started with a working basic LXDE desktop with Lightdm. apt install build-essential apt install pkg-config apt install libgudev-1.0 libwnck-3-dev libnotify-dev libupower-glib-dev xinit Download the fat tarball from http://archive.xfce.org/xfce/4.14/fat_tarballs/ export … Continue reading Compiling Xfce 4.14, on Debian Buster

Configure Geo-blocking with Apache on Debian

To enable Geo-IP Blocking on Debian 9 Stretch, assuming you already have a running Apache web server: apt install libmaxminddb0 libmaxminddb-dev apt install apache2-dev Download and extract the latest MaxMind Apache mod version from: https://github.com/maxmind/mod_maxminddb/releases Follow the instructions to configure and install from the source code Download and install the GeoIP Update program to automate … Continue reading Configure Geo-blocking with Apache on Debian