A corporate network is the circulatory system of a business. Its reliability determines whether your employees can work seamlessly in the office, remotely, or between multiple branches. IT Master designs and configures network infrastructure of any complexity — from a simple VPN for a few remote workers to a fault-tolerant corporate network spanning multiple offices with VLAN segmentation and centralized management.
Why Businesses Need VPN
A VPN (Virtual Private Network) is an encrypted tunnel between devices or networks over the public internet. For businesses, it solves several key problems.
Secure remote work. An employee connects to the corporate network from their home laptop as if they were physically sitting in the office. They have access to internal services, CRM, 1C, and the file server — and all traffic is encrypted. Without VPN, data is transmitted over an open channel and can be intercepted.
Branch office connectivity. Site-to-site VPN connects multiple offices into a single network. Employees in Odessa and Kyiv work on a shared network, print to each other's printers, and access the same server. No dedicated leased lines — just your internet connection and an encrypted tunnel.
Public network security. A sales manager connecting to café Wi-Fi? Without VPN, their passwords and client data are at risk. With VPN — all traffic is encrypted regardless of the network quality.
Which Protocol to Choose
WireGuard is our priority choice for most tasks. Modern, fast, minimalist: only ~4,000 lines of code versus ~100,000 in OpenVPN. Connection time — under one second. Resource consumption — minimal. Ideal for mobile devices and unstable connections.
IPSec / L2TP is built into most operating systems and mobile devices without installing additional software. Suitable where third-party clients cannot be installed.
OpenVPN is a battle-tested protocol with broad support. It passes well through restrictive firewalls. We use it where WireGuard is blocked by corporate or government firewalls.
MikroTik — the Heart of the Network
MikroTik is a Latvian network equipment manufacturer offering enterprise functionality at 5–10 times lower cost than Cisco. We actively use MikroTik RouterOS for building corporate networks: routing, VLAN, QoS, firewall, VPN (WireGuard, IPSec, PPTP), internet channel failover, and Hotspot for guest Wi-Fi.
For corporate Wi-Fi, we recommend Ubiquiti UniFi — centralized access point management through a single controller, isolated guest networks, and detailed per-device statistics.
Network Segmentation and VLAN
Putting all devices on a single network is a serious security mistake. If a virus reaches one computer, it instantly spreads to everyone. VLAN segmentation divides the network into isolated zones: office computers, servers, Wi-Fi, IP cameras, guest access — each in a separate segment. Infection in one segment does not affect others.
Firewall and Traffic Control
We configure firewall rules on the principle of "everything not explicitly allowed is denied." We block dangerous resources, limit traffic for certain applications, and configure QoS — priority for VoIP and critical business services over YouTube and torrents.
Network Monitoring
A problem detected before it affects the business — that is the goal of monitoring. We configure Zabbix or The Dude (MikroTik's built-in tool): channel load graphs, ping of all nodes, and Telegram alerts when any device goes offline.
Ready to build a reliable network for your business? Submit a request — we will conduct a free audit of your current infrastructure.
