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INFO: Full form for NITS is Network Integrated Transmission Service in Networking category
NITS also has other full forms in other categories mentioned below.

INFO: Full form for NITS is Network Independent Transport Service in Networking category
NITS also has other full forms in other categories mentioned below.

INFO: Full form for SPA is Server Participation Arrangement in Networking category
SPA also has other full forms in other categories mentioned below.

INFO: Full form for CSTR is Call Successfully Terminated Ratio in Networking category
CSTR also has other full forms in other categories mentioned below.

INFO: Full form for ATP is Asymmetric Transport Protocol in Networking category
ATP also has other full forms in other categories mentioned below.

INFO: Full form for ATP is Appletalk Transaction Protocol in Networking category
ATP also has other full forms in other categories mentioned below.

INFO: Full form for SSI is Server System Infrastructure in Networking category
SSI also has other full forms in other categories mentioned below.

INFO: Full form for SSI is Satellite To Streaming Initiative in Networking category
SSI also has other full forms in other categories mentioned below.

INFO: Full form for SSI is System Services Interface in Networking category
SSI also has other full forms in other categories mentioned below.

Server Side Includes (SSI) is a simple interpreted server-side scripting language used almost exclusively for the World Wide Web. It is most useful for including the contents of one or more files into a web page on a web server (see below), using its #include directive. This could commonly be a common piece of code throughout a site, such as a page header, a page footer and a navigation menu. SSI also contains control directives for conditional features and directives for calling external programs. It is supported by Apache, LiteSpeed, nginx, IIS as well as W3C's Jigsaw. It has its roots in NCSA HTTPd.

In order for a web server to recognize an SSI-enabled HTML file and therefore carry out these instructions, either the filename should end with a special extension, by default .shtml, .stm, .shtm, or, if the server is configured to allow this, set the execution bit of the file.

INFO: Full form for SPI is Subsequent Protocol Identifier in Networking category
SPI also has other full forms in other categories mentioned below.

INFO: Full form for SPI is Scsi-3 Parallel Interface in Networking category
SPI also has other full forms in other categories mentioned below.

INFO: Full form for SPI is Statefull Packet Inspection in Networking category
SPI also has other full forms in other categories mentioned below.

INFO: Full form for SPI is Session Parameter Index in Networking category
SPI also has other full forms in other categories mentioned below.

The Security Parameter Index (SPI) is an identification tag added to the header while using IPsec for tunneling the IP traffic. This tag helps the kernel discern between two traffic streams where different encryption rules and algorithms may be in use.

The SPI (as per RFC 2401) is a required part of an IPsec Security Association (SA) because it enables the receiving system to select the SA under which a received packet will be processed. An SPI has only local significance, since it is defined by the creator of the SA; an SPI is generally viewed as an opaque bit string. However, the creator of an SA may interpret the bits in an SPI to facilitate local processing.

This works like port numbers in TCP and UDP connections. What it means is that there could be different SAs used to provide security to one connection. An SA could therefore act as a set of rules.

Carried in Encapsulating Security Payload (ESP) header or Authentication Header (AH), its length is 32 bits.