1 | initial version |
VNC is not registered as a dissector. See end of packet-vnc.c:
#define VNC_PORT_RANGE "5500-5501,5900-5901" proto_reg_handoff_vnc(void) { vnc_handle = create_dissector_handle(dissect_vnc, proto_vnc); dissector_add_uint_range_with_preference("tcp.port", VNC_PORT_RANGE, vnc_handle); heur_dissector_add("tcp", test_vnc_protocol, "VNC over TCP", "vnc_tcp", proto_vnc, HEURISTIC_ENABLE);
It's a subdissector to the tcp.port
table.
There is an example of getting a subdissector at the end of the Wiki page for Lua/Dissectors:
local tcp_dissector_table = DissectorTable.get("tcp.port") original_http_dissector = tcp_dissector_table:get_dissector(80)
Here is an example getting the VNC dissector based on the port number 5500:
local tcp_port_table = DissectorTable.get("tcp.port") local vnc_dissector = tcp_port_table:get_dissector(5500) print (vnc_dissector) print "----------"
10/17/2021 1:34:40 PM Console opened 10/17/2021 1:35:08 PM VNC 10/17/2021 1:35:08 PM ----------