Packets DownRange
I, due to recent SSH vulnerabilities in MikroTik, figured this series of articles would be relevant. The router may have strong passwords and firewall filters, but those services still receive constant login attempts from automated scanners. For years, the normal answer was a VPN with a management network. VPNs work well, but they require another … Read more
The following is from the 7.23.7 changelog. What’s new in 7.23.7 (2026-09-16): *) lte – prevent the modem firmware from being deleted for RBSXTLTE3-7, EC25-EU&KNe, EG25-G&KNe, EC25-EU&SXTsq, EG25-G&SXTsq (introduced in 7.23.6); If you have already upgraded to 7.23.6 or 7.24.3, follow these steps to restore LTE functionality on affected devices: For more details, see:https://forum.mikrotik.com/t/warning-lte-interface-stops-working-after-upgrade-to-7-23-6-7-24-3
What it looks like when an intruder tries to make your own router work against you. A note before we start: Anything in this post that could identify my network, my organization, or my router’s real hostname and IP address has been redacted or made generic. The attacker’s own infrastructure, such as IP addresses, ports, … Read more
The J2SW BGP Community Builder selects documented provider communities and generates scoped policy fragments for MikroTik, Cisco, Junos, and FRRouting.
What’s new in 4.3 (2026-Jul-20 10:14): *) app: add Windows for arm64 version in file WinBox_Windows_arm64.zip;*) form: make multiline input field height logic as in WinBox v3;*) table: add quick comment feature (allow multi-row commenting);*) table: allow opening “Table settings” also via right mouse click;*) table: calculate implicit height to fit 16 regular rows including … Read more
Ever wondered what the effects of different combinations of PPPoE, GRE, and others have on the MTU of a packet? I am excited to announce the first of many J2 Network tools: the J2SW MTU and Encapsulation Calculator. You select the service MTU and the encapsulation used on the path. The calculator then works out … Read more
Mikrotik has added some new features to system…packages as far as updating goes. More info to come soon.
Whether you’re a seasoned engineer or just getting started, this post will walk you through the six most common MikroTik configuration errors and how to avoid them.
In this post, I will dive into what the no_export attribute is, how it works, and when you should use it.
The following is a Template for creating a BGP session with both a v6 and a v4 peer in Mikrotik RouterOS v7. It costs $15 for Patreon subscribers or $20 for everyone else.
In this post, I will break down what OSPF point-to-point mode is, when to use it, and why it might be your best option.
In this post, I walk through some key quirks and common pitfalls you might encounter when configuring BGP on MikroTik RouterOS (v6 & v7), Cisco IOS, Juniper Junos, and Arista EOS.