Scott Wasson Email & Phone Number

Acton, Ma

● Responsible for designing and developing a Linux anti-spam traffic shaper appliance that measures SMTP client reputations and adjusts QoS accordingly.● Ported it to the Dell PowerEdge R610 platform.● Designed TLS scanning support for the traffic shaper.● Designed and implemented numerous features: increased reputation database size, increased max simultaneous connections, spambot throttling techniques, syslog traffic logging, inline scanning.

● Responsible for designing and developing a Gentoo development environment for the next generation of Covergence platforms.● Integrated the new development and build environment with our existing applications.● Designed and built the Linux-based bootable USB stick software for commissioning our various Intel-based platforms, and updating it to bootstrap new platforms for the first time.● Wrote Linux kernel patches for various drivers.● Co-designed and developed a Linux kernel… Show more ● Responsible for designing and developing a Gentoo development environment for the next generation of Covergence platforms.● Integrated the new development and build environment with our existing applications.● Designed and built the Linux-based bootable USB stick software for commissioning our various Intel-based platforms, and updating it to bootstrap new platforms for the first time.● Wrote Linux kernel patches for various drivers.● Co-designed and developed a Linux kernel module to perform early inspection and SIP parsing for Denial of Service attack prevention.● Designed and wrote a highly configurable DoS engine to detect such attacks, and communicate with the Linux kernel SIP and Netfilter modules to thwart them. Much of it was written in Java.● Wrote application code to control the LSI RAID controller for status, syslog, SNMP traps, alarms, etc. Show less

Joined Cisco as part of Arrowpoint acquisition.

● Participated in the architectural design, specifica­tion, and implementation of its “Content Smart Switch” products.● Designed and implemented “fast path” microcode that performed TCP/UDP flow switching for 64 ports of mixed 10/100 Mbps and gigabit Ethernet. Processing included Network Address Translation (NAT), TCP/IP L3 & L4 checksum correction, and HTTP 1.1 persistent flows detection.● Designed and implemented VLAN MAC Bridging layer for the Content Smart Switch. Implementation… Show more ● Participated in the architectural design, specifica­tion, and implementation of its “Content Smart Switch” products.● Designed and implemented “fast path” microcode that performed TCP/UDP flow switching for 64 ports of mixed 10/100 Mbps and gigabit Ethernet. Processing included Network Address Translation (NAT), TCP/IP L3 & L4 checksum correction, and HTTP 1.1 persistent flows detection.● Designed and implemented VLAN MAC Bridging layer for the Content Smart Switch. Implementation required a distributed filtering database across multiple blades in the chassis. Supported IEEE 802.1(p,q) VLAN tagging and QOS, and bridging support for non-TCP/UDP frames.● Participated in the design of the Flow Manager, which interacted with the “fast path” to set up and tear down TCP/UDP flows.● Participated in the design of the Connection Manager, which created Virtual Connections (VCs) through the ATM switch fabric between “fast path” instances at the control of the Flow Manager. Show less

● Implemented RFC1661 PPP for a multi-protocol router, including control protocols and support for IPv4, DECnet Phase IV, AppleTalk, IPX, and OSI.● Employed a rich variety of associated PPP features, including Link Quality Monitoring, en­cryption, compression, authentication, and multilink PPP.● Co-implemented DECnet Phase IV.● Optimized ‘C’ bridging and routing code by porting it to assembly language.● Used the Motorola 68060’s MMU to write-protect code space and the heap in… Show more ● Implemented RFC1661 PPP for a multi-protocol router, including control protocols and support for IPv4, DECnet Phase IV, AppleTalk, IPX, and OSI.● Employed a rich variety of associated PPP features, including Link Quality Monitoring, en­cryption, compression, authentication, and multilink PPP.● Co-implemented DECnet Phase IV.● Optimized ‘C’ bridging and routing code by porting it to assembly language.● Used the Motorola 68060’s MMU to write-protect code space and the heap in order to track down memory scribblers. Show less

● Participated in IEEE 802.1(d) meetings for the design of the Mac Bridge Spanning-tree algorithm.● Designed and implemented embedded firmware for MAC Bridges.● Designed and implemented diagnostic software for communications controllers.