Summary
Overview
Work History
Education
Skills
Certification
Timeline
Generic

Hafeezuddin Mohammed

Chicago,IL

Summary

Network Professional with 6 years of experience in Network infrastructure, Network Security, IT operations Management, Project Management, and Technical Support with multiple clients/customers.

Overview

6
6
years of professional experience
1
1
Certification

Work History

Network Security Engineer

AT&T
12.2021 - 05.2024
  • Work on resource facing service tickets involving QoS, Routing changes (BGP, OSPF and EIGRP), Policy Based Routing, RADIUS/ TACACS, QoS, VRF lite, VRRP, IPSec, ACL
  • Configured OSPF redistribution and authentication with type 3 LSA filtering to prevent LSA flooding
  • Perform DNS multi-grid management, NIOS upgrade, adding DNS entries, DHCP configs profiles, IPAM, HA groups, hosts, managing/viewing reports for DNS and DHCP
  • Coordinate with application teams, firewall team and network engineering team to migrate the application from old DMZ to New DMZ on F5 Big-IP load balancers
  • Creation of Persistence profile, SSL Profile, SSL certificate upload and installation, new self IP's and floating IP's for F5 load balancers
  • Implement highly available and redundant network topologies using IPSec VPN, and BGP using a combination of underlying MPLS, VRFs, ACI underlay network, L2VPN and L3VPN etc
  • Design solutions built around wide area network (WAN) fundamentals and value-added services including SDWAN, SASE, ZTNA, PCI Compliance and Network Security (Intrusion Detection Systems - IDS, Intrusion Prevention Systems - IPS, Anti-Virus -AV)
  • Maintain and manage multiple CDNs for load sharing and high availablity, traffic distribution as per the business rules
  • Configured Bluecoat proxy servers in order to manage load balancing traffic for multiple customers
  • Providing network administration and ensure high level of reliability and stability along integrated systems-VxLAN
  • Maintaining firewall rules, MTU jumbo-frame upgrade and perform packet capture using Wireshark tool
  • Executed functionality, interop, negative, scale and stress testing of Multihop BFD, Serivce Acl for BFD, QoS interface range support, GRE hardware tunnel, TCP MSS ceiling in Juniper devices
  • Handled change management process for chassis upgrades, device upgrade, BGP turn ups for DataCenter network

Network operations engineer

Capital One
01.2018 - 12.2021
  • Worked on multiple projects and technical issues on layer 2 to layer 7 like VRRP, ARP, LACP, BGP, OSPF, TCP, UDP, SSL, DNS, DHCP, NAT, PKI, QoS and HTTPS
  • Performed routine firmware upgrades like BIG-IP ISO for F5 ADC, Cisco IOS, NX OS, Arista EOS, Panorama OS [Palo Alto] and patch updates
  • Troubleshooting of Cisco 2900, 3900, 6500Series routers, Juniper EX4200 series switches & Cisco ASA 5500 series firewall
  • Involved in L1/L2 Switching Technology Administration including creating and managing VxLAN, Port security, Trunking, STP, InterVlan routing for Cisco Nexus 9K/7k/5k series, T1/DS1, MPLS
  • Configured static NAT, dynamic NAT, dynamic NAT overloading
  • Install/Replace F5 Viprion load balancer blades - configure vcmp guests, manage licenses and configuration backups
  • Recreating customer issues related to Palo Alto and Fortinet firewalls to aid Engineering team for a faster resolution of the issue
  • Expertise in configuring and administration of Bluecoat DNS-DHCP Products (IPAM, XMB2, XMB3)
  • Deployment of Zscaler Web proxy Firewall globally over Global site
  • Troubleshoot network issues like jitter, latency or packet loss, perform traffic filtering, firewall audits, resolving network issues by identifying bottleneck using PRTG, Solarwinds Orion
  • Responsible for testing a feature related to network security, developed a topology with help of multiple Arista switches and 1 Cisco IP phone
  • Analyzing reports of Link with SOLARWIND, Network Node Monitor tools for MPLS using SYSLOGS

Education

Master of Science - Computer And Information Sciences

Campbellsville University
Campbellsville, KY
12.2023

Skills

  • IPSEC VPN
  • GRE/VTI tunneling
  • SSL-VPN
  • ACL
  • NAT
  • Web and URL filtering
  • OSPF
  • BGP
  • IGP
  • EIGRP
  • BFD
  • PBR
  • VLAN
  • ARP
  • VTP
  • STP
  • RSTP
  • HSRP
  • VRRP
  • VRF
  • LACP
  • WAF
  • Transit gateways
  • Security groups
  • VPN
  • EC2 instances
  • VPC
  • Elastic load balancing (ELB)
  • TLS
  • Ethernet
  • Fast & Gigabit Ethernet
  • VLANs
  • Frame Relay
  • PPP
  • HDLC
  • (E1/T1/E3T3)
  • DS3
  • Putty
  • Wireshark
  • Solarwinds
  • Allot
  • Datadog
  • Tcp-dump
  • F5 BigIP
  • F5 Viprion
  • LTM
  • GTM
  • ASM
  • ServiceNow
  • HP Service Manager
  • JIRA
  • DNS
  • FTP
  • SFTP
  • SMTP
  • DHCP
  • VmWare
  • Bluecoat Proxies
  • TACACS
  • RADIUS
  • Cisco ACS
  • ISE
  • Bash
  • Python
  • SAP ABAP
  • Cisco IOS
  • IOS-XR
  • IOS-XE
  • Windows
  • UNIX
  • LINUX

Certification

  • CCNA (Cisco Certified Network Associate)
  • CCNP - Route (Cisco Certified Network Professional)
  • AWS Solutions Architect - Associate

Timeline

Network Security Engineer

AT&T
12.2021 - 05.2024

Network operations engineer

Capital One
01.2018 - 12.2021

Master of Science - Computer And Information Sciences

Campbellsville University

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Hafeezuddin Mohammed