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Knowledge Base Glossary
.htaccess
a directory-level configuration tool that allows for specific changes

.htaccess file
the AuthUserFile directive

A Record
points a domain to an IP address

AJAX
Asynchronous JavaScript and XML; not a new programming language

ANSI-C
American National Standards Institute for the C programming language.

AOF
append only file

APC
alternative PHP cache

API
application program interface

Bandwidth
the amount of data transferred from a website to a user’s computer

BCC
blind carbon copy

CA
Certificate Authority; an entity that issues and verifies SSL certificates

catch-all address
used to divert incorrectly addressed emails to a another domain

CC
carbon copy

CDN
content delivery network

CDP
continuous data protection

CMS
content management system

CN
common name

CPU
central processing unit

CVSS
common vulnerability scoring system

DB
database

DBA
doing business as

DC
data center

DDoS
distributed denial-of-service attack

DK
DomainKeys; an email authentication system used to verify the DNS domain of the sender

DKIM
DomainKeys-identified mail

DN
distinguished name

DNS
domain name system; a system of translating easily remembered domain names to an IP address on a server

DoS
denial of service

DSN
data source name

ESI
Edge Side Includes

Extendware
a two-factor authentication extension that requires a passcode to access the administrator panel

favicon
favorite icon; also known as a shortcut icon

FPM
FastCGI Process Manager

FQDN
fully-qualified domainname

FTP
file transfer protocol

Gig-E
Gigabit Ethernet

GUI
graphical user interface

gzip
Gnu zip; file format and a software application used as a compression utility

HAPEE
HAProxy Enterprise Edition

HAProxy
high availability proxy

HDM
help-desk manager

ICANN
Internet Corporation for Assigned Names and Numbers; this organization oversees domain names and coordinates global Internet systems

IDE
intregrated development environment

IDPS
graphics server software; run by an application program and dedicated to technical and scientific data display

IMAP
Internet message access protocol; a protocol for email retrieval

InnoDB
a storage engine for MySQL

IP Address
numeric value assigned to a device or server used to communicate with the Internet

IPS
intrusion prevention system

IPsec
internet protocol security

JVM
Java virtual machine

KL
the Nexcess knowledge library

KM
knowledge management

KMP
knowledge management process

LAMP
Linux Apache MYSQL PHP

MAC address
media access control address

Magmi
Magento Mass Importer

maldet
short for Linux malware detect, also abbreviated as LMD

MD5
message-digest algorithm; used to verify data integrity

MIME
multi-purpose internet mail extensions

MRC
monthly recurring charge

MTR
my traceroute; used to track how information travels between computers

MX
mail exchange record; a type of DNS record

MX record
mail exchange records; used within the DNS records to specify a mail server for accepting email messages

MySQL
open source relational database management system (RDBMS) using structured query language (SQL)

Nameserver
specialized servers that translate domain names into an IP addresses

Nginx
pronounced "engine x;" a free, open-source, high-performance HTTP server and reverse proxy

nksir
Nexkit security incident response; a command for performing different security-related tasks on a server

NUMA
non-uniform memory access

OBP
Optimized Blog Plan

opcode
free open-source operation code

OS
operating system

OTR
Outer Drive; refers to the Nexcess Outer Drive Data Center in Dearborn, MI

PA
power admin

PCI DSS
Payment Card Industry Data Security Standard; the information security standard used by the credit card processors to secure consumer data

PHP-Nuke
PHP-Nuke is a web-based automated news publishing and content management system based on PHP and MySQL.

PID
process identification

PKI
public key infrastructures

POP
1) In email clients: post office protocol; used by an email client to retrieve email from remote servers, 2) In CDNs, one of many worldwide locations clients can use to request and receive assets

POP3
post office protocol 3; third version of POP, used by an email client to retrieve email from remote servers

Pound
SSL reverse proxy, suitable for load balancing SSL over servers

PPTP
point-to-point tunneling protocol

PSCP
PuTTY secure copy client

PuTTY
free and open-source terminal emulator, serial console and network file transfer application

QA
quality assurance

RDB
resource description framework

RDBMS
relational database management system

rDNS
reverse domain name system; a method of determining the domain name through the provided IP address

Redis
Remote DIctionary Server

registrant
the owner of a domain name; not to be confused with registrar

registrar
the party responsible for registering a domain name; not to be confused with registrant

REST
representational state transfer

RFID
radio-frequency identification

RSH
remote shell; a program that executes shell commands on a user’s behalf on a computer on a network

Rublon
free extension available to implement two-factor authentication for your Magento store

SCL
structured control language

SCM
source code management system

SEO
search engine optimization

SID
session ID

SIP
session initiation protocol

SOHO
small office or home office

SOW
service of work

SPA
secure password authentication

SPF
sender policy framework; used to prevent email spam by verifying IP addresses

SQL
structured query language

SSH
secure shell; a secure command-line based method that allows remote commands to be run on a different machines

TCP
transmission control protocol

TLD
top-level domain

TLS
Transport Layer Security; cryptographic protocol designed to provide communication security over the Internet

TTL
time-to-live; the number of seconds that a record will be considered valid by a server caching the information

TWD
Nexcess technical writing and documentation; also refers to the TWD department at Nexcess

TXT Record
type of DNS record that provides text information to sources outside your domain

UAC
user-access control

UID
user identication; used by UNIX to identify each user

URI
uniform resource identifier; often used interchangeably with "web address" or "website"

URL
uniform resource locator; often used interchangeably with "web address" or "website"

UX
user experience

VCL
Varnish configuration language

VCS
version control system

vhost
virtual host; a method for hosting multiple domain names on a single server

VPN
virtual private network

WAF
web application firewall

WinSCP
Windows Secure CoPy; secure method for transferring files between local and remote hosts or between two remote hosts