Building a Multi-Site MikroTik Network with OSPF
A complete guide to designing and deploying multi-site OSPF routing with MikroTik RouterOS for enterprise branch offices.
Technical Blog
Deep-dive technical articles on enterprise networking, security, virtualization, monitoring, and automation — written from real-world experience.
A complete guide to designing and deploying multi-site OSPF routing with MikroTik RouterOS for enterprise branch offices.
Master VLAN tagging, trunking, and inter-VLAN routing on MikroTik CRS and CCR devices for secure network segmentation.
Configure IPSec IKEv2 site-to-site VPN tunnels between MikroTik routers for secure inter-office connectivity.
Implementing a zero-trust security model using Fortigate NGFW, SSL inspection, and micro-segmentation for enterprise environments.
An introduction to network penetration testing methodology, tools (nmap, Metasploit), and how to identify common vulnerabilities.
Design principles for effective firewall policies: rule ordering, deny-by-default, logging, and periodic review cycles.
Step-by-step guide to building a 3-node Proxmox cluster with Ceph storage, HA failover, and live migration for production VMs.
Setting up and configuring Proxmox Backup Server for automated VM backups, deduplication, and efficient storage management.
Creating enterprise-grade Zabbix dashboards with custom metrics, triggers, and Grafana integration for infrastructure visibility.
Deploy a complete observability stack using Prometheus for metric collection and Grafana for visualization of network KPIs.
Understanding SNMP v2c/v3, walking OID trees, creating custom Zabbix templates for network devices and servers.
Automating network device configuration with Ansible: real playbooks for MikroTik RouterOS and Cisco IOS environments.
Write Python scripts to automate configuration backups, bulk changes, and network audits using Netmiko and NAPALM libraries.
Design NSX-free enterprise networking in vSphere with Distributed Virtual Switches, port groups, LACP, and traffic shaping.
Comprehensive security hardening checklist for Linux production servers: SSH, firewall, audit, SELinux, and automated compliance.
Configure Nginx for reverse proxying, load balancing multiple backends, and SSL termination with Let's Encrypt in production.
Optimize Linux kernel parameters for high-throughput network servers: TCP buffers, IRQ affinity, NUMA, and I/O schedulers.
Configure High Availability in VMware vSphere: admission control, restart priorities, and proactive HA for production clusters.
Master Simple Queues, Queue Trees, and PCQ in MikroTik RouterOS to control per-user and per-IP bandwidth allocation.
Best practices for designing AD forests, sites, subnets, and replication topology for distributed enterprise environments.
Apply CIS Benchmark controls to Windows Server: account policies, audit policies, registry hardening, and automated compliance.
Configure eBGP dual-homed connectivity for enterprise networks: path selection, policy routing, and failover with Cisco IOS-XE.
Implement end-to-end QoS policies on Cisco routers and switches to prioritize VoIP traffic and eliminate packet loss.
Deploy and manage LXC/LXD system containers for lightweight virtualization: networking, storage pools, profiles, and cluster setup.
Deep dive into Docker bridge, overlay, and macvlan networks for production deployments with multi-host connectivity.
Implement Kubernetes NetworkPolicy resources for pod-to-pod traffic control, namespace isolation, and egress filtering.
Adopt GitOps practices for infrastructure management: Terraform modules, Git branching, pull request reviews, and automated apply pipelines.
Design and deploy SD-WAN solutions for distributed enterprise branches: policy-based routing, WAN optimization, and failover.
Design scalable OSPF topologies with areas, summarization, redistribution, and authentication for large enterprise Cisco networks.
Build a comprehensive backup and disaster recovery strategy with defined RTO/RPO targets, backup tiers, and regular testing procedures.
Create and maintain accurate network documentation: topology diagrams, IP address management, change logs, and runbooks.
Deploy a production VoIP system with Asterisk FreePBX: SIP trunks, extensions, IVR, call queues, and recording.
Plan network capacity proactively: traffic analysis, growth modeling, bottleneck identification, and upgrade planning cycles.
A comprehensive guide to building a production-ready blog platform with full-text search, category filtering, syntax highlighting, and RSS feed generation using Next.js, Shiki, and Drizzle ORM.
Configure WireGuard VPN peers on MikroTik RouterOS 7 for fast, secure remote access and site-to-site tunnels.
Deploy a MikroTik HotSpot system with user management, bandwidth limits, voucher codes, and custom login pages.
Leverage RouterOS 7 new routing engine for BGP sessions, route filters, communities, and redundant ISP connectivity.
Configure MikroTik dual-WAN with ECMP load balancing, health checks, and automatic failover for high-availability internet.
Write RouterOS scripts and schedule them with the Scheduler tool to automate repetitive tasks like backups, reports, and interface restarts.
Configure MikroTik CRS series switches with bridge, VLAN, STP, port isolation, and hardware offloading for line-rate performance.
Use MikroTik mangle rules for packet marking, PBR, connection tracking, and QoS classification across complex network topologies.
Automate SSL/TLS certificate issuance, renewal, and deployment using Lets Encrypt, ACME protocol, and cert-manager in production.
Deploy Snort and Suricata for network intrusion detection: rule management, alert tuning, and integration with SIEM platforms.
Design multi-zone DMZ architectures with dual firewalls, service tiers, traffic flow policies, and internet-facing server hardening.
Build a SIEM platform using Elasticsearch, Logstash, and Kibana for centralized log collection, correlation, and threat detection.
Compare OpenVPN and WireGuard for remote access VPN: performance benchmarks, security model, configuration, and use cases.
Implement SPF, DKIM, and DMARC to protect your domain from email spoofing and phishing attacks with step-by-step DNS configuration.
Build a layered ransomware defense strategy: network segmentation, endpoint protection, immutable backups, and incident response playbooks.
Set up OpenVAS/Greenbone for continuous vulnerability scanning: scan configs, credential scans, reporting, and remediation workflows.
Write production-ready Bash scripts for log rotation, system health checks, automated alerting, and infrastructure maintenance tasks.
Configure LVM volumes, software RAID arrays, and ZFS pools on Linux for redundant, flexible, and high-performance storage.
Install and configure Postfix as a production mail server with Dovecot IMAP, SpamAssassin, DKIM signing, and TLS encryption.
Configure Linux network bonding for redundancy, 802.1Q VLANs for segmentation, and bridges for VM networking with systemd-networkd.
Deploy Prometheus Node Exporter for deep Linux system metrics: CPU, memory, disk, network, and custom collectors with Grafana dashboards.
Build an active-passive HA load balancer cluster with Keepalived VRRP and HAProxy for zero-downtime failover in production.
Deploy the ELK stack (Elasticsearch, Logstash, Kibana) with Filebeat agents for centralized Linux system log collection and analysis.
Master STP, RSTP, and MSTP on Cisco switches: root bridge election, port states, BPDU guard, PortFast, and loop prevention.
Introduction to Cisco ACI architecture: APIC controller, fabric policies, EPGs, contracts, and microsegmentation for data centers.
Configure IP multicast routing with PIM-SM and PIM-SSM on Cisco routers for efficient one-to-many traffic distribution.
Overview of Cisco SD-Access with DNA Center: fabric provisioning, policy segmentation, assurance, and automated network management.
Configure VMware vSAN for hyper-converged storage: disk groups, policies, stretched clusters, and deduplication/compression.
Configure MikroTik to send email alerts for interface down events, high CPU, reboot detection, and daily status reports.
Upgrade vCenter Server from v6.x to v8: pre-upgrade checks, VCSA deployment, migration wizard, and post-upgrade validation.
Get started with VMware NSX-T: transport zones, segments, tier-0/tier-1 gateways, distributed firewall, and NAT configuration.
Optimize ESXi hosts for maximum VM performance: NUMA topology, CPU scheduling, memory ballooning, storage I/O, and network tuning.
Use the Terraform Proxmox provider to provision VMs, containers, and storage as code with declarative infrastructure management.
Track per-user bandwidth consumption in MikroTik using IP Accounting, Torch tool, and queue statistics.
Manage LXC containers in Proxmox VE: templates, networking, resource limits, privilege settings, and production-grade configurations.
Configure GPU passthrough in Proxmox VE using IOMMU and VFIO for AI/ML workloads, gaming VMs, and CUDA-accelerated tasks.
Collect and analyze NetFlow/sFlow data using nfdump, ntopng, or Elastic Stack for bandwidth accounting and anomaly detection.
Configure Alertmanager routing trees, inhibition rules, silence schedules, and multi-channel notification for on-call teams.
Deploy Uptime Kuma for self-hosted uptime monitoring with HTTP, TCP, DNS, and certificate checks plus public status pages.
Deploy Grafana Loki with Promtail for log aggregation: label-based querying, LogQL, alerting, and integration with Grafana dashboards.
Configure PRTG for enterprise network monitoring: auto-discovery, SNMP sensors, custom scripts, maps, and alerting channels.
Design and publish reusable Terraform modules with input variables, output values, and version pinning for team-wide infrastructure sharing.
Deploy SaltStack for event-driven infrastructure automation: states, pillars, grains, reactors, and orchestration runners.
Implement Puppet for declarative configuration management: manifests, modules, Hiera, environments, and compliance enforcement.
Build Jenkins pipelines for infrastructure automation: Terraform plan/apply, Ansible runs, testing stages, and approval gates.
Write automated network tests using pytest and Nornir: connectivity checks, configuration validation, and regression testing pipelines.
Use Nornir with Netmiko and NAPALM plugins for parallel network automation: inventory management, task plugins, and result processing.
Plan and execute zero-downtime migrations: blue-green deployments, traffic cutover strategies, rollback plans, and validation steps.
Create, publish, and manage Helm charts for Kubernetes: templates, values files, hooks, chart dependencies, and private repositories.
Build a Hyper-V Failover Cluster with Cluster Shared Volumes, Live Migration, and HA virtual machines on Windows Server.
Deploy and manage applications on Kubernetes using ArgoCD: App of Apps pattern, sync policies, RBAC, and multi-cluster management.
Use Docker Compose in production with health checks, resource limits, secrets management, logging drivers, and rolling updates.
Build custom Prometheus exporters to expose business metrics, proprietary systems, and internal APIs for monitoring and alerting.
Deploy and use HashiCorp Vault for dynamic secrets, PKI, database credentials, and Kubernetes integration in production.
Learn to manage MikroTik through WebFig browser interface, SSH terminal, and RouterOS CLI — commands, navigation, and shortcuts.
Deploy Istio service mesh on Kubernetes: mutual TLS, traffic shifting, circuit breaking, observability, and access policies.
Build GitHub Actions workflows for infrastructure: Terraform plans on PRs, automated testing, environment deployments, and rollback strategies.
Configure Windows Server DHCP with scopes, reservations, failover clustering, and DNS with zones, forwarders, and DNSSEC.
Configure Windows DFS Namespaces and DFS Replication for distributed file sharing, redundancy, and branch office file access.
Create and manage address lists in MikroTik — static lists for groups of IPs and dynamic lists that auto-populate from firewall rules.
Configure Azure AD Connect for hybrid identity: password hash sync, pass-through authentication, SSO, and conditional access policies.
Plan and deploy IPv6 in enterprise environments: addressing plans, dual-stack, NDP, DHCPv6, and IPv6 security considerations.
Implement 802.1X Network Access Control with FreeRADIUS for wired switch ports and wireless SSIDs with EAP-TLS and PEAP.
Design a Wi-Fi 6 enterprise network: access point placement, channel planning, BSS coloring, WPA3, and fast BSS transition.
Use L7 protocol matching in MikroTik to identify and filter application traffic like Telegram, YouTube, and torrents by payload patterns.
Understand and configure MPLS L3VPN with PE-CE routing, VRFs, route distinguishers, and route targets on Cisco IOS-XR.
Understand NAT/PAT internals, configure source NAT, destination NAT, 1:1 NAT, and hairpin NAT on MikroTik and Linux.
Design and implement a comprehensive NAC solution: endpoint compliance, guest access, posture assessment, and quarantine VLANs.
Secure your DNS infrastructure with DNSSEC signing, DNS-over-HTTPS, DNS-over-TLS, and RPZ-based DNS filtering for threat blocking.
Secure Docker and Kubernetes deployments: image scanning, non-root containers, seccomp, AppArmor, network policies, and runtime security.
Apply a systematic OSI-layer troubleshooting methodology using Wireshark, ping, traceroute, tcpdump, and protocol analyzers.
Configure VLANs, trunks, access ports, VTP, and inter-VLAN routing on Cisco Catalyst switches for enterprise LAN deployments.
Master IaC principles with Terraform, Ansible, and Pulumi: idempotency, state management, versioning, and team collaboration workflows.
Discover what MikroTik is, what RouterOS can do, and why it's the go-to choice for ISPs and enterprise networks worldwide.
A practical guide to MikroTik hardware families: RB, CCR, CRS, hAP, and hEX series — what to choose for each use case.
Download Winbox, find your MikroTik on the network, log in for the first time, and understand the Winbox interface layout.
Understand how to add IP addresses to MikroTik interfaces, configure subnets, and verify connectivity step by step.
Configure a DHCP server on MikroTik to automatically assign IP addresses to clients — pool setup, gateway, DNS, lease times.
Configure NAT masquerade in MikroTik to share a single internet connection with multiple devices on your local network.
Understand MikroTik firewall chains, how traffic flows through them, and write your first firewall rules to protect your network.
Learn static routing in MikroTik to connect multiple subnets, configure default gateways, and troubleshoot routing issues.
Configure MikroTik as a wireless access point: SSID, security profile, frequency selection, client isolation, and performance tips.
Create bridges in MikroTik to connect multiple interfaces on the same layer-2 segment — essential for switch-like behavior.
Configure MikroTik DNS resolver with upstream servers, static DNS entries, DNS cache, and filtering for your local network.
Configure a PPPoE client on MikroTik to connect to your ISP: dial settings, credentials, auto-reconnect, and routing.
Create and manage MikroTik users with specific access policies: read, write, full — and restrict management by IP and service.
Learn the difference between .backup and export in MikroTik, how to restore configurations, and best practices for config protection.
How to safely upgrade RouterOS: checking changelogs, backing up first, update methods, and rollback if something goes wrong.
Configure Netwatch to ping hosts and automatically run scripts when a host goes up or down — alerting and failover automation.
Configure MikroTik system logging, read and understand logs, and send logs to a remote syslog server for centralized monitoring.
Enable and configure SNMP v2c/v3 on MikroTik for integration with Zabbix, PRTG, Grafana, and other monitoring tools.
Create Simple Queues in MikroTik to limit download/upload speed per IP, per subnet, and understand burst parameters.
Use Per Connection Queue (PCQ) in MikroTik to fairly distribute bandwidth among all active users automatically.
Enable MikroTik built-in graphing to visualize interface traffic, queue usage, and resource consumption over time in your browser.
Use CAPsMAN (Controlled Access Point system Manager) to manage multiple MikroTik APs from one controller with unified config.
Configure 802.1Q VLANs on MikroTik using bridge VLAN filtering: trunk ports, access ports, and inter-VLAN routing.
Configure a secure IPSec IKEv2 site-to-site VPN between two MikroTik routers with pre-shared key or certificate authentication.
Set up PPTP and L2TP/IPSec VPN servers on MikroTik for remote employees — user creation, client config, and security considerations.
A practical daily checklist for MikroTik administrators: logs, interfaces, resources, backups, and performance indicators to check every day.
Write RouterOS scripts to automatically backup your MikroTik configuration and send it to an FTP server or via email on a schedule.
Systematic approach to diagnosing internet connectivity problems in MikroTik: ping tests, routing table checks, NAT verification, and DNS.
View active DHCP leases, add static assignments by MAC address, clear stale leases, and manage IP pool ranges in MikroTik.
Monitor MikroTik interface link states, configure alerts for link-up/down events, and track uptime with scripts.
The complete routine for updating RouterOS safely: checking release channels, downloading packages, scheduling the update, and verifying post-update.
Review, organize, and clean up firewall rules in MikroTik: disable unused rules, add comments, export for documentation.
Use the MikroTik Torch tool and built-in packet sniffer to diagnose traffic issues, find bandwidth hogs, and analyze protocols.
Import SSL certificates into MikroTik, enable HTTPS for the admin panel, use Let's Encrypt via ACME, and monitor cert expiry.
Learn about the attack vectors that target MikroTik devices: brute force, CVE exploits, DNS hijacking, and botnet recruitment — and how to defend.
Block brute force attacks on MikroTik SSH, Winbox, and web admin using firewall rules, dynamic address lists, and rate limiting.
Implement port knocking on MikroTik to hide SSH and Winbox behind a sequence of port knocks — invisible to scanners.
A complete hardening checklist for MikroTik firewalls: block bogons, restrict management, anti-spoof, SYN flood protection, and more.
Mitigate DDoS attacks on MikroTik using connection rate limits, SYN flood protection, UDP/ICMP flood rules, and auto-blacklisting.
A deep dive into the Chimay Blue exploit and CVE-2018-14847 Winbox vulnerability: how they worked, what was affected, and how to protect.
Secure the MikroTik Winbox port (8291), restrict access by IP, disable when not needed, and detect exploitation attempts.
Learn to read MikroTik logs to spot intrusion attempts, configure log actions, and forward alerts to a remote syslog for analysis.
Harden MikroTik VPN configurations: use IKEv2 over PPTP, enforce strong ciphers, certificate authentication, and log all VPN sessions.
Detect and automatically block port scanners in MikroTik using firewall rules and dynamic address lists that auto-ban scanner IPs.