Wireshark · Wireshark-bugs: [Wireshark-bugs] [Bug 12835] New: Bad description for NBSS error code 0x81

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Bug ID	12835
Summary	Bad description for NBSS error code 0x81
Product	Wireshark
Version	Git
Hardware	All
OS	All
Status	UNCONFIRMED
Severity	Minor
Priority	Low
Component	Dissection engine (libwireshark)
Assignee	bugzilla-admin@wireshark.org
Reporter	peak@argo.troja.mff.cuni.cz

Build Information:
commit 6febe27586426ac556b56b491a93fed4c852680a on GitHub
--
When the NBSS dissector sees error code 0x81 in a Negative session response
packet, it calls the error "Not listening for called name". See the table in
epan/dissectors/packet-nbt.c:

static const value_string nbss_error_codes[] = {
    { 0x80, "Not listening on called name" },
    { 0x81, "Not listening for called name" },  <=== HERE
    { 0x82, "Called name not present" },
    { 0x83, "Called name present, but insufficient resources" },
    { 0x8F, "Unspecified error" },
    { 0x0,  NULL }
};

This is wrong (and confusing). 0x81 should be "Not listening for calling
name"--"calling" not "called". The error is supposed to indicate the server is
not willing to talk to a client having a certain name. In fact, Samba returns
it when the client is denied access by hosts allow/deny.

See:
<https://tools.ietf.org/html/rfc1002#section-4.3.4>
<http://ubiqx.org/cifs/NetBIOS.html#NBT.6.2>

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