mirror of
https://git.FreeBSD.org/ports.git
synced 2024-10-18 19:49:40 +00:00
fb16dfecae
Commit b7f05445c0 has added WWW entries to port Makefiles based on
WWW: lines in pkg-descr files.
This commit removes the WWW: lines of moved-over URLs from these
pkg-descr files.
Approved by: portmgr (tcberner)
22 lines
1.0 KiB
Plaintext
22 lines
1.0 KiB
Plaintext
fpdns - Fingerprinting DNS servers
|
|
|
|
A nameserver basically responds to a query. Interoperability is an
|
|
obvious requirement here. The standard protocol behaviour of different
|
|
DNS implementations is expected to be the same.
|
|
|
|
Requirements for protocol behaviour of DNS implementations is widely
|
|
documented in the case of 'common' dns messages. The DNS protocol
|
|
is over 20 years old and since its inception, there have been over
|
|
40 independent DNS implementations, while some implementations have
|
|
over 20 versions.
|
|
|
|
The methodology used to identify individual nameserver implementations
|
|
is based on "borderline" protocol behaviour. The DNS protocol offers
|
|
a multitude of message bits, response types, opcodes, classes, query
|
|
types and label types in a fashion that makes some mutually exclusive
|
|
while some are not used in a query messages at all. Not every
|
|
implementation offers the full set of features the DNS protocol set
|
|
currently has. Some implementations offer features outside the
|
|
protocol set, and there are implementations that do not conform to
|
|
standards.
|