Likewise, he has made significant changes in security and entire network infrastructures.
He has expertise in network, firewall and security architecture.
John is also very knowledgeable in network security, operations, and administration.
John was hired to help us out with security and network issues, which he did very well.
He's borderline psychotic about network security, so if he gives you a funny look, you probably said something relating to poor security.
He is an excellent reference particularly for networking and security and lots more.
John is very knowledgeable in all aspects of security and is well networked with other experts.
His knowledge in security and networking combined make him outstanding.
Our network is faster and more secure thanks to his diligent work.
John has a very strong understanding of network and hardware security.
John showed self-initiative in following up with a request on our network and security update.
John has helped our company successfully tackles several networking and security challenges.
He is extremely knowledgeable in the areas of network security.
As he has strong networking and security administration background, he is very helpful to share his experience and vision with me.
His attention to detail is exactly what is needed in network security.
His dedication and thoroughness ensured a reliable and secure network.
He's not just good at network security he has a talent for it.
He loves network security, but what he loves at most is doing his work with everything polished.
He has an extensive knowledge about networks and how optimize them for both speed and security.
In the network security world, in particular, his knowledge and understanding seems boundless.
John proved to be incredibly helpful and knowledgeable regarding networking and security.
He is hardworking and his knowledge in network security is indispensable for us.
John would always find a solution for a network problem, without compromising security.
He improved our security both of the network and all of the mobile devices.
First was the extent of his knowledge and experience in network security.
During this time he was well versed in the network and security technology/architecture being implemented.
It's because he'll figure out where your network isn't completely secure and his company will fix it so that you never have to worry about it again.
He has guided me on a range of issues from creating networks through to securing sponsorship.
He posses in-depth knowledge of cyber security and networking.
John is one of those rare guys who intrinsically understands network and security architecture.
John has a broad range of strengths both in security and in network architecture.
Him vast network of contacts was invaluable for sales, securing conference speakers and networking.
John is the collaborator of choice if you want to increase or test the security of your networks.
I am impressed with the depth of his understanding of the network security field.
John is wonderful to work with and has unique expertise in the network security space.
John is my go to person for all things security and network related.
He worked closely with our information security endeavors, and he was always looking at the best ways to fold in network security.
His insights and his wide network often create solutions for difficult security subjects.
John demonstrated a deep understanding of the issues involved in network security.
He is always well prepared and an excellent speaker and Networker.
John has very good knowledge on the different security issues; network and application.
I would recommend him without reservation as somebody to network with and to know.
His knowledge about building and maintaining secure networks are impressive.
John was a dedicated and responsible employee, who was very knowledgeable in the network security area.
He truly knows and understands networking, data center and security.
John has a deep knowledge of networking environment and security threats and countermeasures.
He deeply knows network and security matters; it is a pleasure to work with him.
John is a top-notch network security expert, with invaluable knowledge.
John was quick to assist someone from my network getting connected to someone in his network.
John played an integral role in our company's network architecture and security.
His experience in forensics, host and network security were invaluable during incidents.
He is exceptionally well qualified and very competent as a security and networks professional.