Atlantic Systems Group
 - ASG specialises in UNIX system and network security.  We provide both our TurnStyle family of security products and security consulting services. 
BOFH Consulting
 - Basics on network and unix security. 
Computer ps, inc.
 - Cps provides netwrok security solutions & electronic business solutions for Internet commerce. Firewalls, Net.Commerce,Certificate of Authority servers. 
Cornell Computer Consulting
 - Offering Macintosh, PC and UNIX system consulting.  Networking and Security specialists. 
Deer Run Associates
 - A firm specializing in networked systems management and security.  Training services available. 
FSA Corp.
 - A Canadian software company specializing in UNIX security, performance, and system administration. 
FSC Internet
 - FSC Internet is Canada's largest UNIX/Internet security consulting firm. FSC's clients include numerous top-tier corporations (e.g.Mazda, Heinz), as well as mid-sized companies (e.g. the Vermont Telephone Company) and the public sector. 
Integration Technologies
 - Providing UNIX Systems Adminsitration and Network consulting to the US Navy.  We also support WWW, GIS and network security.  Private businesses Welcome! 
intra.NETiX Ltd.
 - Intra.NETiX Ltd.  Unix & Network Management, Consulting & Integration Internet/Intranet Applications Develpment 
Log-n Computing
 - Located in NY State's Capital Region, security planning and testing; Internet marketing strategies; Internet connectivity; and UNIX systems administration. 
LTTSC
 - Lucent Technologies Technical Services Comp.  (LTTSC) offers consulting & training services in HPUX, SUNSolaris, NT, Firewalls and more. 
Netsys.com
 - We provide Unix,Internetworking, and Security services to a wide variety of clients.  
Paktronics
 - Network Systems custom/commercial management and design.  Available Novell and Linux Firewalls, WWW, Email, etc.  Specialists in IP/IPX routed intranetwork security. 
Security Professionals Group
 - Kansas City based security group specializing in Corporate Security Audits, Secure Policy Design, Security Advisory Subscription, etc. 
Softway Pty Ltd
 - Softway is a leading UNIX systems software development and computer security consultancy based in Australia. 
Technologic, Inc.
 - the leader in Internet security and manufacturer of the Interceptor firewall. 
Technology Applications, Inc. 
 - Specializing in Solaris medium and large scale server & turnkey systems with Sybase, Oracle, or Informix, as well as host connectivity communications (X.25, SNA, TCP/IP, Token Ring). 
Trident Data Systems
 - a premier systems integrator specializing in information technology and information protection service solutions. 
Trusted Information Systems
 - Trusted Information Systems provides network and computer security consulting services for all Unix systems. 
Trusted Systems Training, Inc
 - computer security training and consulting company specializing in highly secure computer and networking systems, including Windows NT and Secure UNIX. 
Uniforce Informatique Inc.
 - Advanced Unix administration, integration (Security, inter/Intranet) and development (internal, C/C++/Java).  Network Management.