Network Consulting

From corporate network infrastructure design to implementation, firewall management to BGP/VXLAN routing configurations — our expert team is here for all your networking needs. We work with FortiGate, Cisco, Juniper, MikroTik and more, delivering professional solutions from office networks to data center backbones at any scale.

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Network Consulting

Professional Network Management

IzHost Network Management and Consulting service covers the entire lifecycle of your network infrastructure — from planning to installation, daily operations to continuous optimization. Our expert network engineers have deep knowledge and experience in configuring firewalls such as FortiGate, pfSense, and Sophos, deploying Cisco and Juniper switch/router infrastructure, and designing BGP multi-homing and VXLAN overlay networks.

We design network topologies tailored to your organization's scale, create security layers through VLAN segmentation, and prioritize critical applications with QoS policies. We offer a wide range of services from office networks to multi-location WAN structures, SD-WAN solutions to cloud connectivity.

Features

Firewall Management

Installation, configuration, and management of FortiGate, pfSense, Sophos XG, Palo Alto, and Cisco ASA firewalls. Security policy design, NAT/PAT rules, SSL VPN and IPSec VPN tunnels, IPS/IDS configuration, web filtering, application control, and Advanced Threat Protection (ATP). Firewall rule auditing and optimization to eliminate unnecessary rules.

BGP & Routing Protocols

BGP (Border Gateway Protocol) multi-homing configuration, AS number management, prefix filtering, and route-map policies. Dynamic routing infrastructure with OSPF, EIGRP, and IS-IS interior routing protocols. Policy-based routing, route redistribution, and failover scenarios. BGP peering setup and management with Internet Service Providers.

VXLAN & Overlay Networks

VXLAN (Virtual Extensible LAN) overlay network design and implementation. Data center network modernization with EVPN-VXLAN fabric architecture. Layer 2 extensibility over Layer 3 infrastructure, multi-tenant isolation, and distributed anycast gateway configuration. Spine-Leaf topology design for scalable, high-performance data center networks.

Switch & VLAN Configuration

Installation and management of Cisco Catalyst, Juniper EX, Aruba, HP ProCurve, and MikroTik switches. VLAN design and segmentation, trunk port configuration, STP/RSTP/MSTP spanning tree optimization, port security, and 802.1X NAC (Network Access Control). Link aggregation (LACP), stacking configuration, and VRRP/HSRP protocols for high availability.

Office Network Design

Corporate office network design and implementation. Structured cabling (Cat6a/Cat7), access point placement and Wi-Fi 6/6E coverage analysis, PoE switch planning, VLAN-based departmental segmentation. Guest network isolation, VoIP infrastructure, printer VLANs, and IoT device segmentation. Multi-floor and multi-location office network architectures.

Network Security & Audit

Network security auditing and penetration testing, vulnerability scanning (Nessus, OpenVAS), traffic analysis, and anomaly detection. Zero Trust Network Architecture (ZTNA) design, micro-segmentation, and NAC implementation. SIEM integration, NetFlow/sFlow traffic monitoring, bandwidth management, and QoS (Quality of Service) policies.

FAQ

Which firewall brands do you manage?
We install and manage FortiGate (Fortinet), pfSense, Sophos XG/XGS, Palo Alto Networks, Cisco ASA/Firepower, Juniper SRX, MikroTik RouterOS, and Check Point firewalls. We have certified and experienced engineers for each brand. We can take over management of your existing firewall or design a new security infrastructure from scratch.
Do you handle BGP configuration and AS number management?
Yes, we manage all BGP processes including AS number and IP block applications through RIPE NCC. We design and implement multi-homing configuration, ISP peering, prefix filtering, community tagging, route-map policies, and failover scenarios. We also perform auditing and optimization of your existing BGP configuration.
Is cabling included in office network design?
Yes, we provide complete physical infrastructure design including structured cabling (Cat6a/Cat7) planning, patch panel and rack layout, Wi-Fi access point placement simulation (heat map), PoE budget calculation, and switch port planning. We also coordinate with subcontractor cabling companies.
Can you audit our existing network infrastructure?
Yes, our network audit service maps your current topology, analyzes firewall rules, evaluates VLAN configuration, identifies performance bottlenecks, and delivers a detailed improvement report. Critical security vulnerabilities and performance issues are reported with a prioritized action plan.
Do you offer SD-WAN solutions?
Yes, we design and implement FortiGate SD-WAN, Cisco Viptela/Meraki, VeloCloud, and MikroTik-based SD-WAN solutions. We manage the entire SD-WAN lifecycle including automatic inter-branch failover, application-based routing, WAN optimization, and centralized management panel setup.

Your Secure Infrastructure is Ready

Your data is always safe at our Tier III certified data center in Istanbul, with dual-redundant power systems, 100Gbps backbone, and 24/7 security. Let's determine the best solution for your project together.

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