Internet Assigned Numbers Authority

Remote Framebuffer (RFB)

Created
2010-12-08
Last Updated
2022-06-07
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Registries included below

Remote Framebuffer Security Types

Registration Procedure(s)
Expert Review
Expert(s)
Tristan Richardson
Reference
[RFC6143]
Available Formats

CSV
Value Name Reference
0 Invalid [RFC6143]
1 None [RFC6143]
2 VNC Authentication [RFC6143]
3-15 RealVNC historic assignment
16 Tight historic assignment
17 Ultra historic assignment
18 TLS historic assignment
19 VeNCrypt historic assignment
20 GTK-VNC SASL historic assignment
21 MD5 hash authentication historic assignment
22 Colin Dean xvp historic assignment
23 Secure Tunnel [RFC7869]
24 Integrated SSH [RFC7869]
25-29 Unassigned
30-36 Apple Inc. [Michael_Stein]
37-127 Unassigned
128 RealVNC historic assignment
129 RealVNC historic assignment
129 Tight Unix Login Authentication [Samuel_Mannehed]
130-134 RealVNC historic assignment
135-191 Unassigned
192 RealVNC historic assignment
193-255 Unassigned

Remote Framebuffer Client-to-Server Message Types

Registration Procedure(s)
Expert Review
Expert(s)
Tristan Richardson
Reference
[RFC6143]
Available Formats

CSV
Value Name Reference
0 SetPixelFormat [RFC6143]
1 Unassigned
2 SetEncodings [RFC6143]
3 FramebufferUpdateRequest [RFC6143]
4 KeyEvent [RFC6143]
5 PointerEvent [RFC6143]
6 ClientCutText [RFC6143]
7-21 Possibly used in UltraVNC historic assignment
22-79 Unassigned
80 Possibly used in UltraVNC historic assignment
81-126 Unassigned
127 VMWare historic assignment
128 Car Connectivity [Jörg_Brakensiek] [Terminal Mode v1.0]
129-149 Unassigned
150 TightVNC EnableContinuousUpdates historic assignment
151-244 Unassigned
245 Replit Audio Client Message [Luis_Héctor_Chávez]
246 Dell-EMC [Rajeshkumar_Patel]
247 Dell-EMC [Rajeshkumar_Patel]
248 ClientFence TigerVNC
249 OLIVE Call Control historic assignment
250 Colin Dean xvp historic assignment
251 Pierre Ossman SetDesktopSize historic assignment
252 tight historic assignment
253 gii historic assignment
254 VMWare historic assignment
255 Anthony Liguori historic assignment

Remote Framebuffer Server-to-Client Message Types

Registration Procedure(s)
Expert Review
Expert(s)
Tristan Richardson
Reference
[RFC6143]
Available Formats

CSV
Value Name Reference
0 FramebufferUpdate [RFC6143]
1 SetColourMapEntries [RFC6143]
2 Bell [RFC6143]
3 ServerCutText [RFC6143]
4-15 Possibly used in UltraVNC historic assignment
16-126 Unassigned
127 VMWare historic assignment
128 Car Connectivity [Jörg_Brakensiek] [Terminal Mode v1.0]
129-149 Unassigned
150 TightVNC EndOfContinuousUpdates historic assignment
151-172 Unassigned
173 ServerState historic assignment
174-244 Unassigned
245 Replit Audio Server Message [Luis_Héctor_Chávez]
246 Dell-EMC [Rajeshkumar_Patel]
247 Dell-EMC [Rajeshkumar_Patel]
248 ServerFence TigerVNC
249 OLIVE Call Control historic assignment
250 Colin Dean xvp historic assignment
251 Unassigned
252 tight historic assignment
253 gii historic assignment
254 VMWare historic assignment
255 Anthony Liguori historic assignment

Remote Framebuffer Encoding Types

Registration Procedure(s)
Expert Review
Expert(s)
Tristan Richardson, John Levine
Reference
[RFC6143]
Available Formats

CSV
Value Name Reference
0 Raw [RFC6143]
1 CopyRect [RFC6143]
2 RRE [RFC6143]
5 Hextile [RFC6143]
9-10 Possibly used in UltraVNC historic assignment
16 ZRLE [RFC6143]
-239 Cursor pseudo-encoding [RFC6143]
-223 DesktopSize pseudo-encoding [RFC6143]
4 CoRRE historic assignment
6 zlib historic assignment
7 tight historic assignment
8 zlibhex historic assignment
15 TRLE [RFC6143]
17 Hitachi ZYWRLE historic assignment
20 H.264 [Tristan_Richardson]
21 JPEG historic assignment [Tristan_Richardson]
22 JRLE historic assignment [Tristan_Richardson]
23 VA H.264 [Tristan_Richardson]
24 ZRLE2 [Tristan_Richardson]
50 Open H.264 Encoding [https://github.com/rfbproto/rfbproto/blob/master/rfbproto.rst][Maxim_Devaev]
1000-1002 Apple Inc. [Michael_Stein]
1011 Apple Inc. [Michael_Stein]
1024 to 1099 RealVNC historic assignment [Tristan_Richardson]
1100-1109 Apple Inc. [Michael_Stein]
-1 to -222 tight options historic assignment
-224 to -238 tight options historic assignment
-240 to -256 tight options historic assignment
-257 to -272 Anthony Liguori historic assignment
-273 to -304 VMWare historic assignment
-305 gii historic assignment
-306 popa historic assignment
-307 Peter Astrand DesktopName historic assignment
-308 Pierre Ossman ExtendedDesktopSize historic assignment
-309 Colin Dean xvp historic assignment
-310 OLIVE Call Control historic assignment
-311 ClientRedirect [Brian_Hinz]
-312 Fence TigerVNC
-313 ContinuousUpdates TigerVNC
-314 CursorWithAlpha [Tristan_Richardson]
-315 ColorMap [Tristan_Richardson]
-412 to -512 TurboVNC fine-grained quality level historic assignment
-523 to -528 Car Connectivity [Jörg_Brakensiek] [Terminal Mode v1.0]
-763 to -768 TurboVNC subsampling level historic assignment
0x48323634 VA H.264 [David_Verbeiren]
0x52706C41 Replit Audio Pseudo-encoding [Luis_Héctor_Chávez]
0x574d5600 to 0x574d56ff VMWare historic assignment
0xc0a1e5ce to 0xc0a1e5cf Possibly used in UltraVNC historic assignment
0xfffe0000 to 0xfffe00ff Used in LibVNCServer LibVNCServer
0xffff0000 to 0xffff8003 Possibly used in UltraVNC historic assignment

Contact Information

ID Name Contact URI Last Updated
[Brian_Hinz] Brian Hinz mailto:bphinz&users.sourceforge.net 2011-06-09
[David_Verbeiren] David Verbeiren mailto:david.verbeiren&intel.com 2013-02-08
[Jörg_Brakensiek] Jörg Brakensiek mailto:jorg.brakensiek&nokia.com 2011-05-11
[Luis_Héctor_Chávez] Luis Héctor Chávez mailto:luis&repl.it 2021-03-31
[Maxim_Devaev] Maxim Devaev mailto:mdevaev&gmail.com 2021-02-10
[Michael_Stein] Michael Stein mailto:mvs&apple.com 2022-06-07
[Rajeshkumar_Patel] Rajeshkumar Patel mailto:rajesh_z_patel&Dell.com 2020-07-28
[Samuel_Mannehed] Samuel Mannehed mailto:samuel&cendio.se 2019-11-07
[Tristan_Richardson] Tristan Richardson mailto:standards&realvnc.com 2017-09-12