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Barracuda Email Security Gateway

Glossary

S3
  • Also known as: Simple Storage Service, Amazon Web Services

Object-based, scalable object storage in the AWS cloud.

SafeSearch

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

Salesforce

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

sandboxing

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

Sarbanes-Oxley
  • Also known as: Sox

A United States federal law that sets requirements for all US public company boards, management, and public accounting firms to individually certify the accuracy of financial information.

scalability

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

SCCP
  • Also known as: Signalling Connection Control Part, Skinny

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

SD-WAN
  • Also known as: software-defined networking in a wide area network, software-defined WAN

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

Security Group
  • Also known as: SG

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

serial port

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

service certificate

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

session layer

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

single pass

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.

Single Sign-On
  • Also known as: SSO

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

SIP

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

Site-to-Site VPN

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

SLA
  • Also known as: service level agreement, service-level agreement

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.

smart host

Email message transfer agent that allows a Simple Mail Transfer Protocol (SMTP) server to route email to an intermediate mailserver rather than directly to the recipient's server.

SMS Passcode

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

SMTP
  • Also known as: Simple Mail Transfer Protocol

Internet standard for electronic mail transmission.

SNA
  • Also known as: Systems Network Architecture

IBM's communications architecture and strategy.

snapshot

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

SNMP
  • Also known as: Simple Network Management Protocol

A standard for management of networked devices using a simple request-response data retrieval mechanism. Used for collecting information, along with configuring network devices, such as servers, printers, hubs, switches, and routers on an Internet Protocol (IP) network.

SNMP service

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

SNS
  • Also known as: simple notification service

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

SNTP
  • Also known as: Simple Network Time Protocol

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

Social Security number
  • Also known as: SSN, ss number

A nine-digit number issued to U.S. citizens, permanent residents, and temporary (working) residents for social security purposes.

Source NAT

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.

spam

Unwanted email messages, usually for advertising purposes and usually sent in bulk.

SpamAssassin

Mail filter that is integrated in the Barracuda NextGen Firewall SPAM Filter service.

spamtrap
  • Also known as: honey pot, honeypot, honey trap, honeytrap

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

SPF
  • Also known as: Sender Policy Framework

An email sender authentication mechanism.

SPF record
  • Also known as: Sender Policy Framework record

Type of DNS record that identifies which mail servers are permitted to send email on behalf of your domain.

spooling
  • Also known as: Simultaneous Peripheral Operations Online

Putting jobs in a buffer, a special area in memory, or on a disk where a device can access them when the device is ready. Spooling is useful because devices access data at different rates. The buffer provides a waiting station where data can rest while the slower device catches up.

Spot Instance

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

spyware

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

SQS
  • Also known as: Amazon Simple Queue Service, Amazon SQS

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

SSD
  • Also known as: solid-state drive, solid state drive

A solid-state storage device that uses integrated circuit assemblies as memory to store data persistently.

SSL
  • Also known as: Secure Sockets Layer

Standard security technology for establishing an encrypted link between a server and a client - typically a web server and a browser, or a mail server and a mail client.

SSL VPN client

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.)

static website hosting

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.

stream and packet compression

Data compression technique used in wireless networks.

subnet mask
  • Also known as: subnetwork mask, netmask

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.

subnetting

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

syslog streaming

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

tap

An intrusion into a network cable by a connector.

TCP Proxy

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

TCP/IP
  • Also known as: Transmission Control Protocol/Internet Protocol

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

Telnet

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

terminal server

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.

TFTP
  • Also known as: Trivial File Transfer Protocol

A simplified version of FTP (file tranfer protocol).

timestamp
  • Also known as: time stamp

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

top level domain
  • Also known as: TLD

The last part of a hostname.

transparent proxy
  • Also known as: inline proxy

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

Transport Layer Security
  • Also known as: TLS

Cryptographic protocol that provides communications security over a computer network.

typosquatting
  • Also known as: URL hijacking

A form of cybersquatting which relies on mistakes, such as typographical errors, made by Internet users when typing a website address into a web browser. The URL the user visits usually has malicious intent

typosquatting protection

Barracuda feature that checks for common typos in the URL domain name and, if found, rewrites the URL to the correct domain name so that the user visits the intended website.

unencrypt

To decrypt encrypted data. The antonym of encrypt.

unit

Product or system.

User Identity Awareness

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