John A. Marsh

Associate Professor,
Department of Network and Computer Security
We offer cybersecurity BS-NCS, and MS-NCS programs.
SUNY Polytechnic Institute (formerly SUNY Institute of Technology, or SUNYIT)
Kunsela Hall C119

My Google Scholar page.

Spring 2023 Office Hours: No appointments necessary during office hours!

Mondays & Wednesdays 9:30 – 11:30 and Tuesdays 3:30 – 4:30 online (but maybe in the office also). Or by appointment! My homepage has links to the MS Teams online office hours Tuesday afternoon.


Click here to join me in Tuesday afternoon office hours online!

My YouTube page.

Here is a playlist with discrete math examples of set theory, graph theory, counting, predicate logic, functions, Boolean functions, relations and equivalence, lists, counting, number theory, proof techniques, propositional logic, etc.

Here is a playlist of subnetting examples for NCS 315.

Nano 101 presentation from 2012, with Janet Paluh.

My resume.

Opportunities for Students:

Student Opportunities


Ph.D. Physics, Carnegie Mellon University, 1992.
M.S. Mathematics, Ohio University, 1986.
B.S. Physics (Summa Cum Laude), Honors Tutorial College, Ohio University, 1984.

Research Interests:

Routing in complex networks, telecommunications signal analysis, spread spectrum and CDMA, complexity theory, statistical mechanics, information theory, electro optic modulators, optical multiplexers, optical test equipment, wettability, and surface physics.

See a list of publications at my Google Scholar page.

Links to Presentations:

Summer 2018 Project Fibonacci: Cyber 101
My slides are here

NANO 101 Presentation

Summer 2008 STEM Course: Cell Phones!
My slides are here

2012 Nanotech Symposium and Summer 2010 STEM Course, Nanotechnology!
My slides are here

Spring 2011 Math in Cyber-Security presentation at Clinton HS
My slides are here

Some favorite links: