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You will get a reliable and secure Voice Infrastructure (VoIP)
Top Rated

Project details
Over the last 15 years, I’ve been working on end-to-end VoIP Architecture of different complexity, specialising in IP Telephony Solutions to set up, optimize, migrate and harden security, holding deep understanding of the best industry practices.
What I can do for you:
- Identify current vulnerabilities (VoIP Infrastructure Audit)
- VoIP Design and Re-architecture
- Bill of Materials, Hardware Procurement and Installation
- Documentation
- Configuration & Troubleshooting
- Consult on migration, optimization & hardening
- Industry Compliance & Information Security Policies
- Support for the future Infrastructure
Project Packs:
Starter pack: Audit of the current state VoIP Infrastructure & Findings (6 hours)
Standard pack: VoIP Audit & Improvement Proposal (10 hours)
Advanced pack: VoIP Design Solution incl. High Level Documentation (15 hours)
Main Skills:
3CX, SBC, Asterisk, Kamailio, FreePBX, FreeSWITCH, OpenSIPS, A2Billing, WebRTC, Teams, Unified Communications, CUCM, UCCX, PDI-DSS, ISO 27001, Cisco ASA, NIST, SIP, TLS/SSL, IVR, SS7, ISDN PRI, VoIPmonitor, Firewall, ASR, encryption, routing, geo policies, call behaviour monitoring, fail2ban, Iptables, UFW, ACL, VPN
What I can do for you:
- Identify current vulnerabilities (VoIP Infrastructure Audit)
- VoIP Design and Re-architecture
- Bill of Materials, Hardware Procurement and Installation
- Documentation
- Configuration & Troubleshooting
- Consult on migration, optimization & hardening
- Industry Compliance & Information Security Policies
- Support for the future Infrastructure
Project Packs:
Starter pack: Audit of the current state VoIP Infrastructure & Findings (6 hours)
Standard pack: VoIP Audit & Improvement Proposal (10 hours)
Advanced pack: VoIP Design Solution incl. High Level Documentation (15 hours)
Main Skills:
3CX, SBC, Asterisk, Kamailio, FreePBX, FreeSWITCH, OpenSIPS, A2Billing, WebRTC, Teams, Unified Communications, CUCM, UCCX, PDI-DSS, ISO 27001, Cisco ASA, NIST, SIP, TLS/SSL, IVR, SS7, ISDN PRI, VoIPmonitor, Firewall, ASR, encryption, routing, geo policies, call behaviour monitoring, fail2ban, Iptables, UFW, ACL, VPN
Cybersecurity Expertise
Data Protection, Configuration Management, AuditTechnology Type
Firewall, IaaS, Computer Network, Data Center, DatabaseCybersecurity Regulation
GDPR, ISO, PCI DSS, SOC 2What's included
Service Tiers |
Starter
$415
|
Standard
$620
|
Advanced
$1,025
|
---|---|---|---|
Delivery Time | 3 days | 4 days | 4 days |
Compliance Plan | - | - | - |
Gap Analysis | - | - | - |
Implementation | - | - | - |
Frequently asked questions
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About Alexey
Network, Security, Cloud Consultant with 20+ Years Experience
98%
Job Success
Auckland, New Zealand - 5:30 am local time
Network Administration:
Design and manage VLANs, VPNs, and wireless networks using Cisco Catalyst 9300 switches, Fortigate 400F firewalls, and Juniper EX4300 switches. Proficient with HP ProCurve, Huawei S5700, and Checkpoint 7000 series, ensuring robust operations. Deep expertise in network architecture with Cisco ISR 4000 and Juniper MX960 for scalability, supporting multi-vendor environments.
Wireless Technologies:
Deploy wireless networks with Cisco Catalyst 9800 WLC, Fortinet FortiAP U431F, Juniper Mist AP45, and Checkpoint Harmony Connect, plus Aruba 550 WLC and Meraki MR56 for secure, high-performance connectivity, meeting modern mobility and security needs.
Routing Protocols:
Master BGP, OSPF, and EIGRP on Cisco ISR 4000, Fortigate 200E, and Juniper SRX1500, plus IS-IS and RIP on Checkpoint 16000, ensuring efficient routing in complex, multi-site networks with optimal data paths.
High Availability:
Implement HSRP and VRRP on Cisco Nexus 9500, Fortigate 300D, and Juniper SRX5400, and load-balancing with Checkpoint 23000, optimizing performance and minimizing downtime for mission-critical systems.
Security:
Deploy Cisco ASA 5516-X, Fortigate 600E, Juniper SSG550, and Checkpoint 26000 firewalls, plus PKI, IDS/IPS with Cisco Firepower 4100 and Fortinet FortiAnalyzer 1000F, and RADIUS on Juniper EX9200 for comprehensive protection, aligning with 2025 trends.
Cloud Services:
Manage AWS and Azure with Cisco Secure Cloud, Fortigate VM04 on FortiOS, and Juniper Contrail SD-WAN on vSRX, ensuring secure, scalable cloud solutions with encryption and high availability, aligning with 2025 cloud trends.
Voice & Video Conferencing:
Configure Cisco CUCM on 8800 series, Fortigate VoIP with FortiVoice 200F, and Juniper SBC on SRX380 for reliable, secure communication, supporting hybrid work models.
Network Management Systems:
Use Cisco Prime on DNA Center, Fortinet FortiManager 3000F, Juniper Space on Junos, and Checkpoint SmartConsole on R81 for monitoring, ensuring proactive maintenance and peak performance.
Stack:
Full virtual networking with vSwitches and vRouters: Cisco Nexus 1000V, Juniper Contrail vRouter
VLAN, VxLAN, GRE, Overlay tunnels: Cisco Catalyst 9300, Fortigate 600E, Juniper SRX1500, Checkpoint 26000
IPv6: Cisco ISR 4000, Fortinet FortiOS, Juniper MX960
MP-BGP, EVPN: Cisco Nexus 9500, Juniper QFX5110, Checkpoint 16000
Firewalling: Cisco Firepower 4100, Fortigate 600E, Juniper SSG550, Checkpoint 26000
VPN/OpenVPN/IPSec/WireGuard/Site-to-Site/Client-Server: Cisco ASA 5516-X, Fortigate 200E, Juniper SRX5400, Checkpoint 23000
VPP/DPDK for 100G VPN and routing: Cisco UCS, Fortinet FortiGate-VM
Advanced Linux management: IPTables, Kernel modules, Virtualization, Networking
Traffic engineering: Cisco ISR 4000, Juniper MX960, Fortigate 300D
Advanced StrongSwan IPSec tunnels, XFRM: Cisco, Fortigate 100F
Cloudstack with Open vSwitch: Cisco UCS
OpenNebula with Open vSwitch: Juniper QFX5110
OpenDaylight SDN controller with OpenvSwitch: Cisco Nexus 1000V
Advanced Proxy setup with Squid/Nginx: Cisco servers
Virtuozzo and OpenVZ: Juniper SRX1500
KVM and Libvirtd: Cisco UCS, Fortinet FortiGate-VM
RADIUS and FreeRADIUS: Juniper EX9200, Cisco Catalyst 9300
Pacemaker/Corosync/Keepalived HA cluster: Cisco Nexus 9500, Fortigate 300D
MTLS design and implementation with NGINX: Checkpoint 26000
IoT gateway with Raspberry Pi and 4G modems: Fortinet FortiAP
DevOps with Chef and Ansible: Cisco, Juniper SRX5400
Bash and Python scripting: Cisco Prime, Juniper Space, Checkpoint SmartConsole
Steps for completing your project
After purchasing the project, send requirements so Alexey can start the project.
Delivery time starts when Alexey receives requirements from you.
Alexey works on your project following the steps below.
Revisions may occur after the delivery date.
Determine the scope with client and approve access
Evaluation of the current VoIP Infrastructure