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Security

Linux

Linux wipe disk(s)

Remember: you’re on your own, use with care!! 30 runs of pseudo random data should be safe enough for a rented server you’re going to return soon… # replace sdX with the device you want to wipe for n in `seq 30`; do dd if=/dev/urandom of=/dev/sdX bs=8b conv=notrunc; done& pid=$! Read more…

By Benjamin Wiedmann, 8 years2014/03/03 ago
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
BIND

Enable Postfix DKIM signing for a new mail domain in Debian/Ubuntu

Intro This tutorial describes how to enable DKIM signing with Postfix for your new mail domain example.com and has been tested on Debian Squeeze 6. Generate a DKIM key for your new mail domain example.com # cd /var/lib/dkim/ # amavisd-new genrsa example.com.pem # chmod 0600 example.com.pem # chown amavis: example.com.pem  Tell amavisd Read more…

By Benjamin Wiedmann, 9 years2013/01/15 ago
Categories
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