Glossary

Cloud platform services, where the computing platform (operating system and associated services) is delivered as a service over the Internet by the provider.

Part of the processing of TCP IP traffic that consists of fragmenting, sending, and reassembling packets.

Additional, meaningless data adds to a packet to increase its size.

A device to which a computer has a network connection that is relatively symmetrical and where both devices can initiate or respond to a similar set of requests.

A data storage solution where the data remains intact until it is deleted.

Component of the Barracuda Network Access Client. Centrally managed host firewall that can handle up to four different rulesets at once, depending on the policy applicable to user, machine, date, and time

Logical grouping of AWS instances within a single Availability Zone.

Also called source-based routing, is used when the source IP address of the connection determines, in part or completely, which route is used.

A tool in the IAM AWS Management Console that helps you test and troubleshoot policies so you can see their effects in real-world scenarios.

A means of Media Access Control where a device may only transmit information when it is given permission to transmit by a controller device.

A protocol used to retrieve email from a mail server.

A network protocol that is used to establish VPN tunnels.

24/7 support, offered by Barracuda Networks

A VPC subnet whose instances cannot be reached from the Internet.

Process of preparing and equipping a network or device to allow it to provide services to its users.

An Outlook Data File. Used for POP3, IMAP, and web-based mail accounts. When you want to create archives or back up your Outlook folders and items on your computer, such as Exchange accounts, you must create and use additional PST files. See also OST file.

Cloud computing model, in which a service provider makes resources, such as applications and storage, available to the general public over the Internet. Examples include Amazon AWS, Google Cloud Platform, and  Microsoft Azure.

Cloud-hosted virtual machines, such as Microsoft Azure and Amazon Web Services.

Public Domain Name System (DNS) resolution service.

A subnet whose instances can be reached from the Internet.

Cleaning out inactive or obsolete records or data from the set of active files for archiving or deletion.

Provides a way of storing the same data in different places (redundantly) on multiple hard disks.

1. Relating to a set range of values.2. Global settings that apply to a range on a Barracuda NextGen Control Center.

AWS term, managed Relational Database Service

The time in which an action is performed.

A combination of characters or character classes and operators that describe text for matching purposes.

Involves sharing information to ensure consistency between sources. By comparison, backups save data unchanged for a long period of time; replicas undergo frequent updates.

A pricing option for EC2 instances that discounts the on-demand usage charge for instances that meet the specified parameters. Customers pay for the entire term of the instance, regardless of how they use it.

IP addresses reserved for special purposes. For example, IP addresses reserved and assigned to Azure cloud services.

Support the secondary function of Domain Name System (DNS) - the resolution of IP addresses to host names.

The HTTP Proxy directs incoming requests from other servers to clients without providing the origin details.

Numbered authorization provided by a merchant, like Barracuda Networks, to permit the return of a product.

A return to a previous state after an installation or configuration failure.

A CA-signed or self-signed public key certificate that identifies the root certificate authority (CA).

AWS service for DNS-based load balancing that connects user requests to EC2 instances, ELBs, S3 buckets, and Internet applications and provides health checks for monitoring or to route traffic to healthy endpoints.

In AWS, a set of routing rules that controls the traffic leaving any subnet that is associated with the route table. You can associate multiple subnets with a single route table, but a subnet can be associated with only one route table at a time.

Bridging mode where the router acts as a bridge.

Congestion control algorithm designed for fast download times such as user response times, or flow-completion times. 

One of the four storage classes in AWS. 99.9& SLA reduced redundancy storage, lower fault tolerance, stored in 1 region.

A collection of one or more access or application rules.