Ryan Callanan Email & Phone Number

Framingham, MA, US

Deerfield, IL, US

• Architecture and engineering responsibilities for the following (vendors withheld where applicable):Network Security
• Core and Edge Firewalls
• Web Proxies
• Email Security, Anti-Spam
• Intrusion Detection, Intrusion Prevention (IDS/IPS)
• Vulnerability Scanning and ManagementNetwork Monitoring/Analysis

• Analyzed security architecture of existing networks and developed calculated methodology to address risk.
• Implemented custom security solutions to protect pre-identified weaknesses.
• Assisted sales team by developing detailed project scope and objectives; generated and modified procedures to address issues/problems.
• Developed and implemented effective network, product, and application solutions while adhering to security best practices, government and industry compliance standards.
• Performed knowledge transfers and training to clients regarding security awareness.

• Performed several Exchange 2007 installations including migrations from Exchange 2000/2003.Built and managed various mail environments including Exchange and Sendmail.
• Performed troubleshooting of Windows networks including Active Directory, Group Policy, DNS, routing, IIS, data recovery, etc.
• Designed and implemented Windows-based networks including multiple-location networks with remote domain controllers.
• Implemented and managed DHCP and DNS via Windows Server 2000/2003/2008 as well as DNS via Secure Computing Secure Firewall (Sidewinder) and BIND.
• Analyzed mail environments and implemented Secure Mail (IronMail) appliances to provide mail border protection and enforce corporate compliance policies.
• Planned for and integrated Citrix XenApp (Presentation Server) into existing networks.