TMCnet - The World's Largest Communications and Technology Community
TMC Launches New Sites ::  NGC  |  4GWE  |  Green Tech  |  Satellite  |  IT |  ITEXPO  |  Healthcare  |  Smart Grid  |  M2M  |  Smart Products  |  AstriCon News  |  SATCON News
TMCnet CHANNELS
#1 VoIP Enabler: Risk-free, Quick & Easy Deployment
Advanced Carrier Services
Advanced IP Carrier
Answering Service
Appliance Deployment
ATCA
Auto Dialer
BPA (3rd Party Remote Call Monitoring)
Broadcast Modulator
Business Phone Systems
Business Process Automation
Business VoIP
Call Center
Call Center Certification
Call Center Digital Signage
Call Center Furniture
Call Center Hiring
Call Center Management
Call Center On Demand
Call Center Outsourcing
Call Center Scheduling
Call Center Software
Call Center Solutions
Call Center Training
Call Center Workforce Management
Call Monitoring
Call Recording
Communications Enabled Business Processes
Conference Call
Conferencing
Contact Center Headsets
Contact Center Software
CRM Cloud Computing
CRM Software
CRM Solutions
DID/DDI
Digital Signage
e911
E911 Hosted Solutions
Email Archiving
Email Server
Enterprise Fax over IP
Enterprise VoIP
Ethernet Extender
Fax
Fax Over IP
FoIP
HD Conference
Hosted Contact Center
Hosted Exchange
Hosted PBX
Integrated Communications
IP Fax
IP Multimedia
IP Phone Maker
IP Phone System
IP Phones
IVR
Lead Management Software
Master Agent
Mobile Management
Mobile Unified Communications
Mobile Video
NEBS
Network Installation
Open Source CRM
PBX PCI Adapter
Phone Systems
Portable Satellite Antenna
Predictive Dialer
Sales Software
SATCON
SIP
Speech Recognition and Text to Speech
Telecom Cost Management
Telecom Expense Management
Telecom Lifecycle Management
Telemarketing Software
Telepresence
Testing IP Services
Virtual Call Center
Virtual Office
Virtual PBX
Virtual Receptionist
Voice Broadcast
Voice Management
Voice Over IP
Voice Peering
Voicemail Replacement
VoIP Call Recording
VoIP Contact Center
VoIP Developer
VoIP Gateways
VoIP Monitoring
VoIPSwitch
Web Conferencing
Web Meeting
Wholesale VoIP
Wireless Expense Management
Wireless Management
Workforce Management
Workforce Optimization
Share
Term:
Firewall  

Definition:

This is called a Stateful Inspection for a firewall to check, alert or audit the status (state) of the TCP connection - SYN, SYN-ACK or FIN. In other words, this is what a firewall does, check for correct TCP Ports and IP Addresses and either permits or denies access. Also, technically often-called Port Level Security or Transport Layer Security takes place here. That is, control access by the Port Number such as deny access to Port 35 for email, Port 80 for HTTP (web surfing) Port 21 for File Transfer Protocol or access to any other function.



Reference to:
Reportlinker Adds Endpoint Security for Business Desktops, Laptops & Mobile Devices 2009-2014
11/20/2009

Aarkstore Enterprise-SOA Governance: Applying Governance to Ensure the Long-term Benefits of SOA
11/20/2009

nuBridges Announces Availability of Webinar Detailing Key Benefits of Enterprise Managed File Transfer
11/19/2009

MIKE GRIFFITH JOINS IBBS EXECUTIVE BUSINESS TEAM TO LEAD COMMERCIAL SERVICES GROUP
11/19/2009

Glowpoint Announces Microsoft® Exchange® Integration for its Telepresence and Video Conferencing Management Web Portal
11/19/2009




Source:

Subscribe FREE to all of TMC's monthly magazines. Click here now.