Bringing OpenWrt to the Mikrotik hAP lite (RB941-2nD-TC)

March 19, 2019

In a previous post I described the Mikrotik hAP lite (RB941-2nD-TC) and its RouterOS and already suggested that I prefer to run OpenWrt on it. Because Mikrotik routers behave a bit different than the usual TP-Link, GL.iNet etc. devices and because there were some pitfalls I had to master myself, here’s some advice to keep you out of this trouble. I tried to reflect this in the OpenWrt Wiki as well but maybe you prefer a consistent blog post, at least I’d do so, so here you go. Continue Reading »

An updated configuration file structure diagram for rspamd 1.9.0

March 14, 2019

In a small series on rspamd configuration I did back in August last year I had a diagram illustrating the configuration file structure of the then-current rspamd version. Continue Reading »

The Mikrotik hAP lite (RB941-2nD-TC) router and its RouterOS

March 8, 2019

The MikroTik hAP lite (RB941-2nD-TC) is the result of my search for a cheap but maintained/maintainable LAN router. In this post I’m going to introduce it in a bit more detail for the curious reader. Continue Reading »

Choosing a cheap but maintained/maintainable LAN router

March 8, 2019

Recently I’ve been tasked with the problem of finding a router that had to fulfill five key requirements: it had to offer in total four to five LAN ports, have an internal or a detachable Wifi antenna (if at all), offer a maintained/maintainable firmware, be compact and, most of all, better be cheap, for a specific reason. Continue Reading »

libsmi-based tools such as smilint failing to locate MIB modules

February 28, 2019

While working on my python-netsnmpagent project, I regularly smilint the MIBs used for conformance with the SMI spec to ensure they are proper MIBs. Continue Reading »

The GL.iNet GL-AR150 (POE) router

February 28, 2019

More than once, a device rushed through my timeline that advertised itself through its minimal dimensions, its price and its OpenWrt capability: the GL.iNet AR-150. I now finally got around to have a use case, so I ordered one and had a closer look. Continue Reading »

An overview of GL.iNet’s router offering

February 23, 2019

So far I’ve been an avid user of TP-Link gear when it comes to routers, for their price and feature set (e.g. USB ports) but most of all because you can rather easily run OpenWrt on them. A few times, however, GL.iNet has been rushing through my timeline. Continue Reading »

Using a reverse SSH tunnel to provide an isolated system such as a Raspberry Pi with network access (well, HTTP)

February 20, 2019

Imagine you have a system to which you can only SSH inbound but which is unable to reach any host on the Internet outside the local network. For instance, you might have tightened down network access to secure a local CA. Or, like me, you have a Raspberry Pi that you carried around with you on a trip, so on the one hand you could only access it via network — or do you carry a HDMI display around with you? So you set its Wifi up as an access point spawning its own Wifi network, which, on the other hand, cut it off from Internet access, unless you can configure multiple interfaces. But then, still, network connectivity changes as you travel, from LAN to Wifi to LTE perhaps. Continue Reading »

Analyzing a dump of a Samsung Galaxy S7 /data partition with Samsung encryption

January 29, 2019

So you took a backup of your Samsung Galaxy S7’s /data partition as described in the previous post. Let’s have a look at its encryption! Continue Reading »

Samsung Galaxy phones: Low-level backup of encrypted /data partition with TWRP

January 29, 2019

If you use an Android phone such as the Galaxy S7, you’ll have noticed that there is an “internal storage”, sometimes also shown as “internal SD card”, which in the latter case is somewhat misleading since it is no SD card but part of the internal flash memory. Whereas the “external storage” or “external SD card” is in fact the real (Micro)SD card, provided your device supports it (the Galaxy S7 does). Continue Reading »

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