Networking – David Stein

Connecting Offices: A Step-by-Step Guide to MikroTik Site-to-Site WireGuard

fires — Wed, 07 Jan 2026 11:12:08 +0000

WireGuard has revolutionized the way we think about VPNs. It’s faster than OpenVPN, leaner than IPsec, and significantly easier to configure. If you are running MikroTik hardware (RouterOS v7+), setting up a secure tunnel between two locations is now a 10-minute task. In this guide, we’ll walk through connecting Site A (Headquarters) to Site B (Branch Office).

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Mikrotik – quick OpenVPN setup

fires — Wed, 03 Sep 2025 08:36:33 +0000

In this post, you will find the basic commands to set up OpenVPN on a Mikrotik router. Find the openssl.exe, standard location is C:\Program Files\openvpn\

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ISP Config – website password protection

fires — Wed, 15 Jan 2025 09:50:22 +0000

Sometimes, you must protect your site in ISPConfig with a standard pass or HTTP auth. Here are a few easy steps to do it. I will describe it from the administrator’s view. The manual is for the apache2 server. Now, after you try to access the website there will be an auth dialog.

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Fixing Website Access Issues with Mikrotik MSS Clamping

fires — Thu, 17 Oct 2024 09:44:48 +0000

If you’re having trouble accessing certain websites—like partial page loads or dropped connections—your network’s Maximum Segment Size (MSS) may be the issue. This is common when the MTU (Maximum Transmission Unit) is mismatched across the network, causing packet fragmentation or loss. The problem is mostly on some “really” safe websites like banks, government, etc.

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Zabbix – how to monitor clients on Mikrotik Capsman

fires — Mon, 29 Jul 2024 13:21:13 +0000

Hello, I want to share my solution for monitoring connected clients to CapMan interfaces on Mikrotik in the Zabbix monitoring system. First, for the Zabbix server part, to get data from Mikrotik Capsman we will use the Python script to communicate with Mikrotik API. The Zabbix server needs access to the Mikrotik API, so if you have any problem first check your firewall on Mikrotik and also if…

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Mikrotik – failover script with link quality check

fires — Thu, 26 Jan 2023 10:43:17 +0000

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Mikrotik – DHCP Options – TFTP server

fires — Thu, 01 Dec 2022 18:15:02 +0000

Sometimes you need to push the TFTP server value as part of the DHCP process, for example, this is used in most VoIP systems. The VoIP phone use the TFTP server to download configuration files. Here I will show you how to set this value in the Mikrotik DHCP server. The boring stuff for a start. The pushing TFTP server value with the DHCP server is described in RFC 5859. The part that we…

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Standard ICMP return TTL values by OS

fires — Wed, 22 Dec 2021 13:52:13 +0000

Here are the default TTL values of different devices / Operating Systems : I will update this table in the future when there’s a release of new important OS whenever I get the time. You can get the short version of default TTL values by this table : Source: https://subinsb.com/default-device-ttl-values/

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Apache – Top 10 IP addresses accessing your Apache webserver

fires — Wed, 31 Mar 2021 16:28:00 +0000

Default log paths /var/log/http/access_log [For RedHat based systems] /var/log/apache2/access.log [For Debian based systems] /var/log/http-access.log [For FreeBSD] Command Output 5482 103.28.37.1785356 66.249.78.1681977 66.249.93.1451962 157.55.39.2511924 66.249.93.1421921 66.249.93.1481890 64.233.173.1781860 108.61.183.1341841 64.233.173.1821582 157.55.39.251 Command explain awk ‘{ print $1}’ access.log – take the access.log and print first group (separated by white space) sort – sort records uniq -c – […]

SilverCrest wireless door bell – forget learned devices – solved

fires — Fri, 07 Aug 2020 16:54:51 +0000

This week I had to change the battery in my cheap wireless doorbell device from Lidl shop. But unfortunately when I was a pairing device somebody open doors with a 433MHz contact sensor and the receiver learn it as a wireless button. It is quite funny because I inadvertently invented cheap door open alarm 😀 I do not find any way how to reset this device to total factory setup and…

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