Fabian Alfaro

Experience

• 

  Cisco

  Apr 2012 - Mar 2013

  Network Engineer

  Break /Fix troubleshooting oriented, working with cases handled by email or phone, use of remote access application (WebEx). Schedule meetings and bridge calls to work with the customers, take ownership and follow-up until resolution.Cisco Catalyst platforms such as: C2960, C3560, C3750, C4500, C4948, C6500, plus Metro Ethernet Switches, Blades Switches.Upgrading the IOS software on stand-alone and stack switches, as well as on redundant supervisors engines on high end platforms such as the Cisco Catalyst 6500. Conversions from CatOS to IOS (Hybrid to Native), VSS configuration, Quality of Service, redundancy protocols such as HSRP, GLBP and VRRP.Password recovery on Cisco Catalyst switches. Provide recommendations, guidance on topology or configuration and best practices.Create RMAs and dispatch field engineers.Do lab recreations, deep research (Data mining).Some common problems: High Cpu, output drops, memory issues, Spanning tree loops, latency and slowness on the network, POE issues and further troubleshooting on connectivity issues.Layer 2 security features such as port security, DHCP snooping, Dynamic ARP inspection. Layer 2 protocols in general such as spanning tree, PVRSTP, MSTP, L2PT, and QinQ. Show less

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  Convergys

  Mar 2013 - Apr 2015

  Senior Juniper Networks Engineer

  Break /Fix troubleshooting oriented, working with cases handled by email or phone, use of remote access application (Secure meeting). Schedule meetings and bridge calls to work with the customers, take ownership and follow-up until resolution.Juniper Networks security platforms such as SRX and J-series devices.Upgrading the JUNOS OS software on stand-alone and cluster implementations.Resolution of problems and configurations related with networking in general with protocols such as NAT, IPSEC VPN tunnels, DHCP, Spanning tree, SNMP, NTP, Quality of Service, redundancy protocols such as HSRP, GLBP and VRRP.Password recovery on devices running JUNOS OS. Provide recommendations, guidance on topology or configuration and best practices.Create RMAs and dispatch field engineers.Do lab recreations, deep research (Data mining).Supporting and configuring management, virtual, logical and aggregate interfaces (port-channesl). Dynamic routing protocols such as OSPF, RIP, IS-IS, and BGP as well as routing instances and virtual routers. Configuring and analyzing zone based service control, transparent mode bridges deployments, VLAN rewritting, bridging options. Configuration of security features such as security policies, host inbound traffic, screen options to prevent most common attack to networks at layer 4. Network security implementation such as IPS, AppSecure, User role firewall, SSL inspection, UAC deployments, adn other security features to protect the network. Security features such as UTM (web filtering, content filtering, anti-spam and antivirus), to secure the network. Some common problems: High Cpu, output drops, memory issues, Spanning tree loops, latency and slowness on the network, POE issues and further troubleshooting on connectivity issues. Show less

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  IBM

  Apr 2015 - Dec 2022

  Perform 24x7 Security Event monitoring of supported devices and services for customer devices(Security Incidents). Recommend policy tuning for QRadar appliances.Maintain firmware levels and updates of managed customer devices.Management of user accounts, application performance, capacity and availability. Perform backupsand data collection for different purposes and reports required by the business.Manage report distribution, fine tuning policies based in compliance and regulations.Develop new policy rules via the change management process and provide recommendations toimprove system and application performance. Show less

  • Security Services Managing Consultant

    Jan 2021 - Dec 2022

  • QRADAR SIEM administrator

    Apr 2015 - Dec 2022

  • SIEM Administrator

    Apr 2015 - Jan 2021
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  DeepSeas

  Nov 2022 - now

  Cyber Security Consultant