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Barracuda Backup

Glossary

PaaS
  • Also known as: platform as a service

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

packet fragmentation

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

padding

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

passphrase

Series of characters that must be provided by the user for input to the cryptographic key generation process. Must be no less than eight logical characters and can contain spaces.

PAYG

peer

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.

persistent storage

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

Personal Firewall

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

Placement Group

Logical grouping of AWS instances within a single Availability Zone.

policy routing

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

policy simulator

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.

polling

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

PPTP
  • Also known as: Point-to-Point Tunneling Protocol

A network protocol that is used to establish VPN tunnels.

Premium Support

24/7 support, offered by Barracuda Networks

private subnet

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

public cloud

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.

public key encryption
  • Also known as: asymmetric encryption

Encryption that uses both a public key and a private key as a pair; one is used for encryption, the other is used for decryption.

public subnet

A subnet whose instances can be reached from the Internet.

purging
  • Also known as: purge

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

quiesce

To pause or alter a device or application to achieve a consistent state, usually in preparation for a backup or other maintenance.

RAID
  • Also known as: redundant array of independent disks

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

ransomware

Malicious software designed to block access to computer files or an entire system until a sum of money is paid.

RDS

AWS term, managed Relational Database Service

real time
  • Also known as: realtime, real-time

The time in which an action is performed.

regular expression

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

replication

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

Reserved Instance

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.

Reserved IP addresses
  • Also known as: RIP

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

retention policy

Rules that determine whether data older than a defined age will be deleted of offloaded to another device or cloud.

reverse lookup zone

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

reverse proxy

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

RMA
  • Also known as: Routing Information Protocol

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

rollback

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

root certificate

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

Route 53

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.

route table

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.

routed bridging

Bridging mode where the router acts as a bridge.

RPC protocols
  • Also known as: Rate Control Protocol, ONC-RPC, DCE-RPC

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

RRS

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

ruleset

A collection of one or more access or application rules.