Unifi AP Adoption Failed / IP Not Reachable

By Rachmadona Sebayang

Apparently feel weird. I’ve been trying to find out why my newly purchased AP’s got an error after factory reset. It did not connect properly over network with DHCP enable and stuck on “Offer” status in log of my MikroTik box. It seen stuck on 192.168.1.20 as explained in this forum: https://community.ui.com/questions/new-Unifi-AP-stuck-on-192-168-1-20-dhcp/79056449-8da7-4b34-8f99-7096c9f6a941 What I’ve done…

MikroTik Winbox Vulnerability

By rsebayang

While i am writing this article, MikroTik has released latest patch to fix Winbox vulnerability which been happening for couple months back. Even most of my customers also have same afraid related with this incident because the impact is very bad, your system might be compromised with admin privilege! With that being said the attacker…

Virtual Port Channel vs. Stack vs. Aggregate

By rsebayang

What the differentiation between them? Aggregate means you have one switch/router and which consist of several interfaces and you aim increase the bandwidth within them hence grouping into one or more logical aggregation. Meanwhile you have also multiple switches which you wanted to stack them in order to have single logical switch. This is very…

Auto Upgrade RoS MikroTik

By rsebayang

On last of couple weeks back, one of my customer whose using MikroTik got attacked with Winbox vulnerability. This causes some firewall rules became disable somehow and lead into several incidents reported. Nevertheless i did quick observation and found a script sitting on and forcefully export some setting to unknown place. Therefore i delete the…

How to Setup IPSEC VPN Between Fortigate & MikroTik – Part 2

By rsebayang

Continuing my previous post here regarding how to setup VPN among Fortigate vs. MikroTik, herewith simple target topology of network that we would like to build. Main site: 192.168.0.0/24 + IP Public A + Fortigate Remote site: 192.168.40.0/24 + IP Public B + MikroTik ============================================ From remote site (MikroTik); a. Ensure all traffic internet works…

How to Setup IPSEC VPN Between Fortigate & MikroTik – Part 1

By rsebayang

Hello there, As you may know nowadays Fortigate has become one of the Next Generation (NG) Firewall solution, sitting down together with Palo Alto and even Checkpoint which is most expensive device. But, fortunately Fortigate comes with very friendly cost for selected version and that’s the reason i choose this product as most of my…

How to Reset MikroTik Into Factory Default

By rsebayang

There are many ways to reset Mikrotik based on their device itself. But, in this case I would only discuss about resetting via button which I believe it’s the easiest way to do. Old architecture of MikroTik (powerpc, x86, mipsbe or mipsle) use following combination to reset via button. Unplug your power cable Push and…

Revert Back to Original Firmware TP-Link TL-WA7210N

By rsebayang

In sometime conditions, you’ve configured custom firmware to your AP for certain purposes. Either use DD-WRT or OpenWRT which has some outstanding features and unleash the hidden functions of your device. But, lately after done with such things, for some other reasons you may want to configure back with it’s original firmware. Several devices could…

PCQ – Mudahnya Bagi Bandwidth Secara Adil dan Merata

By Rachmadona Sebayang

PCQ (Per Connection Queue) adalah salah satu fitur dari MikroTik yang memungkinkan kita dapat melakukan pembagian bandwidth secara merata terhadap jumlah klien yang dinamis. PCQ memiliki algoritma sendiri yang dapat menghitung jumlah kebutuhan bandwidth setiap klien. Fitur ini sangat berguna untuk topologi jaringan yang memiliki jumlah klien yang banyak dan selalu berubah-ubah jumlahnya. PCQ bekerja dengan menambahkan…