Sequence number - Revision history

Jnc: Add generic intro

2022-04-25T15:50:42Z

Add generic intro

Larsbrinkhoff: Also e.g. tapes.

2022-04-13T11:55:14Z

Also e.g. tapes.

Jnc: better cat

2018-12-22T13:20:33Z

better cat

Jnc: Proper cat, fix error

2018-10-21T12:37:47Z

Proper cat, fix error

Jnc: Created page with "In an internetwork networking system, a '''sequence number''' is given to even byte or packet (different systems have made different choices on this point) which i..."

2018-06-14T19:09:42Z

Created page with "In an internetwork networking system, a '''sequence number''' is given to even byte or packet (different systems have made different choices on this point) which i..."

New page

In an [[internetwork]] networking system, a '''sequence number''' is given to even [[byte]] or [[packet]] (different systems have made different choices on this point) which is sent from one entity to another. This allows each item to be uniquely [[acknowledgement|acknowledged]] after it has been sent.

In the [[TCP/IP]] [[protocol suite]], the initial sequence number used on any given [[connection]] is random. This was initially intended to guard against old packets left circulating in the internet, but it later turned out that systems which did not pick the number randomly were vulnerable to attacks based on being able to predict sequence numbers.

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[[Category: Networking]]

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-In a [[packet switch]]ing [[communication network]], a '''sequence number''' is given to even [[byte]] or [[packet]] (different systems have made different choices on this point) which is sent from one entity to another. This allows each item to be uniquely [[acknowledgement|acknowledged]] after it has been sent.
+A '''sequence number''' is a unique [[identifier]] applied to each element of an ordered [[array]] of data items. They are most often found in [[data network]]s, but can also be used outside communication contexts, e.g. in [[magnetic tape]] [[record]]s, to help detect and avoid [[input/output|I/O]] errors.
 In the [[TCP/IP]] [[protocol suite]], the initial sequence number used on any given [[connection]] is random. This was initially intended to guard against old packets left circulating in the internet, but it later turned out that systems which did not pick the number randomly were vulnerable to attacks based on being able to predict sequence numbers.
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 [[Category: Networking Basics]]

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 In the [[TCP/IP]] [[protocol suite]], the initial sequence number used on any given [[connection]] is random. This was initially intended to guard against old packets left circulating in the internet, but it later turned out that systems which did not pick the number randomly were vulnerable to attacks based on being able to predict sequence numbers.
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 [[Category: Networking Basics]]

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−	[[Category: Networking]]	+	[[Category: Networking Basics]]