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| colspan="8" class="osi osicolor0" style="text-align:center;" | Media
| colspan="8" class="osi osicolor0" style="text-align:center;" | Media
|}
|}
==== Layer 3 ====
[[Router]]
{| class="" style="padding: 0 1em 0 1em;" cellspacing="0" border="0"
|-
| || class="osi osicolor7" | [[OSI/7 Application|7 Application]] || || || || || class="osi osicolor7" | [[OSI/7 Application|7 Application]] ||
|-
| || class="osi osicolor6" | [[OSI/6 Presentation|6 Presentation‎]] || || || || || class="osi osicolor6" | [[OSI/6 Presentation|6 Presentation‎]] ||
|-
| || class="osi osicolor5" | [[OSI/5 Session|5 Session‎]] || || || || || class="osi osicolor5" | [[OSI/5 Session|5 Session‎]] ||
|-
| || class="osi osicolor4" | [[OSI/4 Transport‎|4 Transport]] || || || || || class="osi osicolor4" | [[OSI/4 Transport‎|4 Transport]] ||
|-
| || class="osi osicolor3" | [[OSI/3 Network|3 Network‎]] ||
| colspan="2" class="osi osicolor3" style="text-align:center;" | [[OSI/3 Network|3 Network‎]] ||
| class="osi osicolor3" | [[OSI/3 Network|3 Network‎]] ||
|-
| || class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]] ||
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]]
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]] ||
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]] ||
|-
| || class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]] ||
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]]
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]] ||
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]] ||
|-
| colspan="8" class="osi osicolor0" style="text-align:center;" | Media
|}
{| class="" style="padding: 0 1em 0 1em;" cellspacing="0" border="0"
|-
|
| class="osi osicolor7" | [[OSI/7 Application|7 Application]]
| class="line" |<
| class="line" | - - - - - - - - -
| class="line" |- - - - - - - - -
| class="line" | >
| class="osi osicolor7" | [[OSI/7 Application|7 Application]]
|-
|
| class="osi osicolor6" | [[OSI/6 Presentation‎|6 Presentation‎]]
| class="line" |<
| class="line" | - - - - - - - - -
| class="line" |- - - - - - - - -
| class="line" | >
| class="osi osicolor6" | [[OSI/6 Presentation‎|6 Presentation‎]]
|-
|
| class="osi osicolor5" | [[OSI/5 Session‎|5 Session‎]]
| class="line" |<
| class="line" | - - - - - - - - -
| class="line" |- - - - - - - - -
| class="line" | >
| class="osi osicolor5" | [[OSI/5 Session‎|5 Session‎]]
|-
|
| class="osi osicolor4" | [[OSI/4 Transport|4 Transport]]
| class="line" |<
| class="line" | - - - - - - - - -
| class="line" |- - - - - - - - -
| class="line" | >
| class="osi osicolor4" | [[OSI/4 Transport|4 Transport]]
|-
|
| class="osi osicolor3" | [[OSI/3 Network|3 Network‎]]
| class="line" | < >
| colspan="2" class="osi osicolor3" style="text-align:center;" | [[OSI/3 Network|3 Network‎]]
| class="line" | < >
| class="osi osicolor3" | [[OSI/3 Network|3 Network‎]] ||
|-
|
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]]
| class="line" | < >
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]]
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]]
| class="line" | < >
| class="osi osicolor2" | [[OSI/2 Data Link|2 Data Link‎]]
|
|-
|
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]]
| class="line" | < >
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]]
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]]
| class="line" | < >
| class="osi osicolor1" | [[OSI/1 Physical|1 Physical‎]]
|
|-
| colspan="8" class="osi osicolor0" style="text-align:center;" | Media
|}
==== Layer 4 ====
==== Layer 4 ====
[[Firewall]]
[[Firewall]]

Version vom 2. Februar 2024, 13:49 Uhr

OSI-Modell

Layer Deutsch Beschreibung
7 Application‎ Anwendung Funktionen für Anwendungen, Dateneingabe und -ausgabe
6 Presentation‎ Darstellung Umwandlung der systemabhängigen Daten in ein unabhängiges Format
5 Session‎ Sitzung Steuerung der Verbindungen und des Datenaustauschs
4 Transport Transport Zuordnung der Datenpakete zu einer Anwendung
3 Network‎ Vermittlung Routing der Datenpakete zum nächsten Knoten
2 Data Link‎ Sicherung Segmentierung der Pakete in Frames und Hinzufügen von Prüfsummen
1 Physical‎ Bitübertragung Bit zum Medium passendes Signal umwandeln, physikalische Übertragung

Übersicht

Sender Empfänger
Anwendung 7 Application 7 Application
6 Presentation‎ 6 Presentation‎
5 Session‎ 5 Session‎
Transport 4 Transport 4 Transport
3 Network‎ 3 Network‎
2 Data Link‎ 2 Data Link‎
1 Physical‎ 1 Physical‎
Media

Layer 2

Switch, Bridge

7 Application < - - - - - - - - - - - - - - - - - - > 7 Application
6 Presentation‎ < - - - - - - - - - - - - - - - - - - > 6 Presentation‎
5 Session‎ < - - - - - - - - - - - - - - - - - - > 5 Session‎
4 Transport < - - - - - - - - - - - - - - - - - - > 4 Transport
3 Network‎ < - - - - - - - - - - - - - - - - - - > 3 Network‎
2 Data Link‎ < > 2 Data Link‎ < > 2 Data Link‎
1 Physical‎ < > 1 Physical‎ 1 Physical‎ < > 1 Physical‎
Media

Layer 1

Repeater, Hub

7 Application < - - - - - - - - - - - - - - - - - - > 7 Application
6 Presentation‎ < - - - - - - - - - - - - - - - - - - > 6 Presentation‎
5 Session‎ < - - - - - - - - - - - - - - - - - - > 5 Session‎
4 Transport < - - - - - - - - - - - - - - - - - - > 4 Transport
3 Network‎ < - - - - - - - - - - - - - - - - - - > 3 Network‎
2 Data Link‎ < - - - - - - - - - - - - - - - - - - > 2 Data Link‎
1 Physical‎ < > 1 Physical‎ < > 1 Physical‎
Media

Layer 3

Router

7 Application 7 Application
6 Presentation‎ 6 Presentation‎
5 Session‎ 5 Session‎
4 Transport 4 Transport
3 Network‎ 3 Network‎ 3 Network‎
2 Data Link‎ 2 Data Link‎ 2 Data Link‎ 2 Data Link‎
1 Physical‎ 1 Physical‎ 1 Physical‎ 1 Physical‎
Media


7 Application < - - - - - - - - - - - - - - - - - - > 7 Application
6 Presentation‎ < - - - - - - - - - - - - - - - - - - > 6 Presentation‎
5 Session‎ < - - - - - - - - - - - - - - - - - - > 5 Session‎
4 Transport < - - - - - - - - - - - - - - - - - - > 4 Transport
3 Network‎ < > 3 Network‎ < > 3 Network‎
2 Data Link‎ < > 2 Data Link‎ 2 Data Link‎ < > 2 Data Link‎
1 Physical‎ < > 1 Physical‎ 1 Physical‎ < > 1 Physical‎
Media

Layer 4

Firewall

7 Application < - - - - - - - - - - - - - - - - - - > 7 Application
6 Presentation‎ < - - - - - - - - - - - - - - - - - - > 6 Presentation‎
5 Session‎ < - - - - - - - - - - - - - - - - - - > 5 Session‎
4 Transport < > 4 Transport < > 4 Transport
3 Network‎ < > 3 Network‎ 3 Network‎ < > 3 Network‎
2 Data Link‎ < > 2 Data Link‎ 2 Data Link‎ < > 2 Data Link‎
1 Physical‎ < > 1 Physical‎ 1 Physical‎ < > 1 Physical‎
Media

Layer 7

Gateway, Proxy-Server, IPS

7 Application < > 7 Application < > 7 Application
6 Presentation‎ < > 6 Presentation‎ 6 Presentation‎ < > 6 Presentation‎
5 Session‎ < > 5 Session‎ 5 Session‎ < > 5 Session‎
4 Transport < > 4 Transport 4 Transport < > 4 Transport
3 Network‎ < > 3 Network‎ 3 Network‎ < > 3 Network‎
2 Data Link‎ < > 2 Data Link‎ 2 Data Link‎ < > 2 Data Link‎
1 Physical‎ < > 1 Physical‎ 1 Physical‎ < > 1 Physical‎
Media
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