Meinberg, with the great help of Mr Weber, has implemented “syslog over TLS” in the LTOS version 7.06. The following report describes the general advantages of “syslog over TLS” and the implementation of it in the LTOS.
Continue reading Meinberg LTOS: “syslog-ng” and the Observed Implementation Pitfalls
More and more security-related devices are capable of sending syslog messages via an encrypted TLS channel. So does the well-known Meinberg LANTIME NTP server with its “LTOS” operating system. (And all the other LTOS-based NTP servers like the IMS or SyncFire series.) Here’s how you can configure it:
Some years ago I wrote a blog post called “Basic syslog-ng Installation“. While I used it myself quite often in my labs or at the customers’ sites, it shows only basic UDP transport which is both unreliable and insecure. So, let’s have a look at a fresh installation of syslog-ng with TLS support for security reasons. However, TCP and UDP as transport are covered as well for the support of legacy systems.
The other day I wanted to verify whether a service running on my Linux server was listening on IPv6 as well as IPv4. It turned out that it wasn’t that easy to answer – if at all.
Continue reading Services listening on IPv6 and IPv4 (or maybe not?)
This post shows a guideline for a basic installation of the open source syslog-ng daemon in order to store syslog messages from various devices in a separate file for each device.
I am using such an installation for my firewalls, routers, etc., to have an archive with all of its messages. Later on, I can grep through these logfiles and search for specific events. Of course it does not provide any built-in filter or correlation features – it is obviously not a SIEM. However, as a first step it’s better than nothing. ;)