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Linux

Add StartSSL certificate to Zimbra ZCS

To install a commercial certificate, e.g. from StartCom (StartSSL), proceed. Be sure to have a proper backup! Change the paths to reflect your environment! If something bad happens, it’s not my fault! Steps required to put a StartSSL certificate into Zimbra ZCS: # TODO fix paths first!!! wget https://www.startssl.com/certs/ca.pem -O Read more…

By Benjamin Wiedmann, 8 years2014/02/17 ago
Jolla

CalDAV and CardDAV sync with Jolla phone, SyncEvolution and Zimbra ZCS or ownCloud and SSL

Jolla firmware 1.0.38 cannot sync CalDAV or CardDAV (Google and Microsoft Exchange only atm), so we’ll fix this now by using a Sailfish OS port of SyncEvolution. Sure, there’s the famous buteo syc framework, but there’s a lot of work to do. Have you backed up your calendars and contacts? If Read more…

By Benjamin Wiedmann, 8 years2014/02/12 ago
Linux

Increase max open files in Debian Squeeze (Too many open files, ulimit -n; limits.conf)

Ever wondered how to increase max open files limit in Debian? Edit limits.conf: # vi /etc/security/limits.conf Format of limits.conf file: domain      type  item        value Insert or adjust the following entries to fit your requirements for system wide soft/hard open files limit (nofile). Soft is like a warning, hard is a real Read more…

By Benjamin Wiedmann, 9 years2012/12/29 ago
Development and hacking

Activate nginx’ SPDY support

Prerequisites At the time of this writing there are some nginx SPDY patches. Even though they’re in beta stadium, they should perform pretty well. As mentioned in the README file the following steps have to be done to get SPDY working on nginx development versions (>=v1.3x): Compile and install nginx development Read more…

By Benjamin Wiedmann, 10 years2012/07/13 ago
Linux

Securing OpenSSH: change ssh listen port from port 22/tcp to something more random

Warning: Remember the ssh port you’ve chosen, otherwise you’ll no longer be able to connect! If using a firewall be sure to open/forward the newly set ssh port! Otherwise you’ll also be locked out! Change the ssh listen port from default (22/TCP) to something random Open /etc/ssh/sshd_config and change: #Port Read more…

By Benjamin Wiedmann, 10 years2012/07/12 ago

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