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fix some layout

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bert hubert 2018-03-29 23:29:30 +02:00
parent 09d20192c5
commit 959046c748
2 changed files with 16 additions and 13 deletions
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27
auth.md
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@ -91,12 +91,12 @@ that are only applicable to resolvers, with new instructions in **bold**.
This description is valid, but its 'node' language may be confusing. An This description is valid, but its 'node' language may be confusing. An
alternate way to describe the process is as follows: alternate way to describe the process is as follows:
2. If the query name is 'www.ietf.org', check the store for a 2. If the query name is `www.ietf.org`, check the store for a
'www.ietf.org' zone. If not found, try 'ietf.org', that is not found try `www.ietf.org` zone. If not found, try `ietf.org`, that is not found try
'org', otherwise try the root zone. If no zones were found, send out `org`, otherwise try the root zone. If no zones were found, send out
REFUSED. REFUSED.
3. Within the first zone that matched (say, 'org'), search for 'www.ietf'. 3. Within the first zone that matched (say, `org`), search for `www.ietf`.
If that was not found, search for 'ietf' etc etc If that was not found, search for `ietf` etc etc
This is effectively the same thing but implemented on a regular key/value This is effectively the same thing but implemented on a regular key/value
lookup engine. lookup engine.
@ -107,9 +107,9 @@ but not in great detail, and not coherently. [RFC
4592](https://tools.ietf.org/html/rfc4592) by comparison discusses wildcards 4592](https://tools.ietf.org/html/rfc4592) by comparison discusses wildcards
in exhaustive detail. in exhaustive detail.
4592 specifically notes that 'one.two.three.ietf.org' is still matched by 4592 specifically notes that `one.two.three.ietf.org` is still matched by
'*.ietf.org'. It also specifies that 'one.*.three.ietf.org' is a valid DNS `*.ietf.org`. It also specifies that `one.*.three.ietf.org` is a valid DNS
name, but that it will only match itself, and not 'one.two.three.ietf.org'. name, but that it will only match itself, and not `one.two.three.ietf.org`.
4592 attempts to clarify every possible misunderstanding relating to 4592 attempts to clarify every possible misunderstanding relating to
wildcards (including interactions with DNSSEC), but is itself a confusing wildcards (including interactions with DNSSEC), but is itself a confusing
@ -122,17 +122,17 @@ exciting places.
# SOA Records # SOA Records
There is only one SOA that is guaranteed to exist on the internet and that There is only one SOA that is guaranteed to exist on the internet and that
is the one for the root zone (called '.'). As of 2018, it looks like this: is the one for the root zone (called `.`). As of 2018, it looks like this:
``` ```
. 86400 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2018032802 1800 900 604800 86400 . 86400 IN SOA a.root-servers.net. nstld.verisign-grs.com. 2018032802 1800 900 604800 86400
``` ```
This says: the authoritative server for the root zone is called This says: the authoritative server for the root zone is called
'a.root-servers.net'. This name is however only used for diagnostics. `a.root-servers.net`. This name is however only used for diagnostics.
Secondly, nstld@verisign-grs.com is the email address of the zone Secondly, nstld@verisign-grs.com is the email address of the zone
maintainer. Note that the '@' is replaced by a dot. Specifically, if the maintainer. Note that the `@` is replaced by a dot. Specifically, if the
email address had been 'nstld.maintainer@verisign-grs.com', this would have email address had been `nstld.maintainer@verisign-grs.com`, this would have
been stored as nstld\\.maintainer.verisign-grs.com. This name would then been stored as nstld\\.maintainer.verisign-grs.com. This name would then
still be 3 labels long, but the first one has a dot in it. still be 3 labels long, but the first one has a dot in it.
@ -141,7 +141,7 @@ all means not always, this is a date in proper order (YYYYMMDD), followed by
two digits indicating updates over the day. This serial number is used for two digits indicating updates over the day. This serial number is used for
replication purposes, as are the following 3 numbers. replication purposes, as are the following 3 numbers.
Zones are hosted on 'masters'. Meanwhile, 'slave' servers poll the master Zones are hosted on 'masters`. Meanwhile, 'slave' servers poll the master
for updates, and pull down a new zone if they see new contents, as noted by for updates, and pull down a new zone if they see new contents, as noted by
an increase in serial number. an increase in serial number.
@ -196,5 +196,6 @@ In short, a notification is a regular DNS message, sent out as a query, but
then with OPCODE=5. Notifications are repeated until acknowledged by the then with OPCODE=5. Notifications are repeated until acknowledged by the
slave server. slave server.
# TBC
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2
resolver.md
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@ -20,4 +20,6 @@ Internet protocol.
So in short, before attempting to write a DNS resolver, ponder if you really So in short, before attempting to write a DNS resolver, ponder if you really
need to. need to.
TBC..
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