Glossary

Feature of Google Search that acts as an automated filter of pornography and potentially offensive content.

An online SaaS company that is best known for delivering customer relationship management (CRM) software to companies over the Internet.

A security mechanism for separating untested or untrusted programs or code, without risking harm to the host environment.

The suitability of a network system to operate properly and efficiently when configured on a large scale.

Network layer protocol that provides extended routing, flow control, segmentation, connection orientation, and error correction facilities in Signaling System 7 telecommunications networks.

A wide area network controlled by software. Control and data are decoupled, simplifying both network hardware and management.

In AWS, a set of firewall rules that control traffic for the instance.

A port on a computing device that is capable of either transmitting or receiving one bit at a time. 

Certificate for a server, signed by a valid, trusted entity, that allows access without further validation.

Certificate for a service, signed by a valid, trusted entity, that allows access without further validation. 

The layer in the OSI 7-Layer Model that is concerned with managing the resources required for the session between two computers.

Algorithm that reads its input exactly once, in order, without unbounded buffering. Generally requires O(n) time and less than O(n) storage (typically O), where n is the size of the input.

A session and user authentication service that permits a user to use one set of login credentials to access multiple applications. 

Communications protocol for signaling and controlling multimedia communication session such as voice and video calls.

Securely connects entire networks to each other, for example, connecting a branch office network to a company headquarters network.

A contractual agreement by which a service provider defines the level of service, responsibilities, priorities, and guarantees regarding availability, performance, and other aspects of the service.

Operates as an application-layer network protocol mainly used for providing shared access to files, printers, and serial ports and miscellaneous communications between nodes on a network.

Multi-Factor Authentication (MFA) solution that adds an extra security layer for a broad range of authentication clients.

IBM's communications architecture and strategy.

Capture of the state of a system at a particular point in time.

An extension to the TLS computer networking protocol, where a client indicates to which hostname it is attempting to connect at the start of the handshaking process.

The SNMP service is used to remotely monitor the network and system state of a Barracuda NextGen Firewall using a network management system (NMS).

Feature to push notifications to mobile services and trigger actions, in Amazon Web Services (AWS).

Network package format for time synchronization, similar to NTP, only recommended for simple applications.

Changing the source address/port in the IP header of a packet. Example: changing a private IP address/port into a public address/port in the IP header of a packet leaving the network.

An email address that is set up by an anti-spam entity, not for correspondence, but to monitor unsolicited email. 

Purchasing option that allows a customer to purchase unused Amazon EC2 computer capacity at a highly-reduced rate.

Software that gathers information about a person or organization without their knowledge.

Amazon Simple Queue Service (SQS) is a fast, reliable, scalable, fully managed message queuing service.

A digital certificate that is installed on a web server, authenticates the identity of the website, and encrypts the data that is transmitted.

SSL Inspection transparently unencrypts, inspects, and and re-encrypts HTTPS traffic. Also has the ability to block a small section of an HTTP site (for example, allowing Google traffic, but blocking Google Play).

Relieves a web server of the processing burden of encrypting and/or decrypting traffic sent via SSL. The processing is offloaded to a separate device designed specifically to perform SSL acceleration or SSL termination.

VPN client that can be installed on the Barracuda CloudGen Firewall and then accessed through the Barracuda SSL VPN web portal. (Barracuda SSL VPN is a different product.)

Route that is explicitly configured and entered into the routing table. Static Routes take precedence over routes chosen by dynamic routing protocols.

Hosting of a static website in Amazon S3. When a bucket is enabled for Static website hosting, all content is accessible to web browsers via the Amazon S3 website endpoint of the bucket.

Data compression technique used in wireless networks.

Helps you know which portion of the IP address identifies the network and which portion identifies the node. You can use subnet masks to divide networks in to subnetworks and to identify the subnetwork an IP address belongs to.

Partitioning of an IP address space into several smaller address spaces.

Method for handling of log file messages that are to be transferred to another system for analyzing purposes.

An intrusion into a network cable by a connector.

The TCP Proxy is placed between browser and web server and filters requests and responses in TCP streams.

A Transport and Network Layer Protocol, respectively, used for communication in the Internet and often in private networks.

A protocol to access a remote computer system, often a Unix system, over the network. Origin: Teletype Network.

A time-restricted grant of access to certain areas that are usually off-limits, without having to change the usual organization's policy. For example, for a special project on a certain date, teachers can grant temporary access for students to view specific domains or categories of domains that are usually blocked by school policy.

Communications processor that connects asynchronous devices such as terminals, printers, hosts, and modems to any LAN or WAN that uses TCP/IP, X.25, or LAT protocols.

A simplified version of FTP (file tranfer protocol).

A date/time string to mark an occurrence of an event. 

The last part of a hostname.

The HTTP Proxy operates transparently to the clients in the network.

Cryptographic protocol that provides communications security over a computer network.

To decrypt encrypted data. The antonym of encrypt.

Product or system.

Software that acts on behalf of the user. For example, an agent might give information about a user's browser and operating system to a web site.

Security term for traffic monitoring based on username, host, and IP address.