Revert "Add incremental RST-to-MyST swap mechanism (#1857)" (#1892)

This reverts commit 4b36114e053ee11d0cb264a1e4cfe4692d78f194.

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diff --git a/docs/configuration/service/md-webproxy.md b/docs/configuration/service/md-webproxy.md
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-(webproxy)=
-
-# Webproxy
-
-The proxy service in VyOS is based on [Squid] and some related modules.
-
-[Squid] is a caching and forwarding HTTP web proxy. It has a wide variety of
-uses, including speeding up a web server by caching repeated requests, caching
-web, DNS and other computer network lookups for a group of people sharing
-network resources, and aiding security by filtering traffic. Although primarily
-used for HTTP and FTP, Squid includes limited support for several other
-protocols including Internet Gopher, SSL,[6] TLS and HTTPS. Squid does not
-support the SOCKS protocol.
-
-URL Filtering is provided by [SquidGuard].
-
-## Configuration
-
-```{cfgcmd} set service webproxy append-domain \<domain\>
-
-Use this command to specify a domain name to be appended to domain-names
-within URLs that do not include a dot ``.`` the domain is appended.
-
-Example: to be appended is set to ``vyos.net`` and the URL received is
-``www/foo.html``, the system will use the generated, final URL of
-``www.vyos.net/foo.html``.
-
-:::{code-block} none
-set service webproxy append-domain vyos.net
-:::
-```
-
-
-```{cfgcmd} set service webproxy cache-size \<size\>
-
-The size of the on-disk Proxy cache is user configurable. The Proxies default
-cache-size is configured to 100 MB.
-
-Unit of this command is MB.
-
-:::{code-block} none
-set service webproxy cache-size 1024
-:::
-```
-
-
-```{cfgcmd} set service webproxy default-port \<port\>
-
-Specify the port used on which the proxy service is listening for requests.
-This port is the default port used for the specified listen-address.
-
-Default port is 3128.
-
-:::{code-block} none
-set service webproxy default-port 8080
-:::
-```
-
-
-```{cfgcmd} set service webproxy domain-block \<domain\>
-
-Used to block specific domains by the Proxy. Specifying "vyos.net" will block
-all access to vyos.net, and specifying ".xxx" will block all access to URLs
-having an URL ending on .xxx.
-
-:::{code-block} none
-set service webproxy domain-block vyos.net
-:::
-```
-
-
-```{cfgcmd} set service webproxy domain-noncache \<domain\>
-
-Allow access to sites in a domain without retrieving them from the Proxy
-cache. Specifying "vyos.net" will allow access to vyos.net but the pages
-accessed will not be cached. It useful for working around problems with
-"If-Modified-Since" checking at certain sites.
-
-:::{code-block} none
-set service webproxy domain-noncache vyos.net
-:::
-```
-
-
-```{cfgcmd} set service webproxy listen-address \<address\>
-
-Specifies proxy service listening address. The listen address is the IP
-address on which the web proxy service listens for client requests.
-
-For security, the listen address should only be used on internal/trusted
-networks!
-
-:::{code-block} none
-set service webproxy listen-address 192.0.2.1
-:::
-```
-
-
-```{cfgcmd} set service webproxy listen-address \<address\> disable-transparent
-
-Disables web proxy transparent mode at a listening address.
-
-In transparent proxy mode, all traffic arriving on port 80 and destined for
-the Internet is automatically forwarded through the proxy. This allows
-immediate proxy forwarding without configuring client browsers.
-
-Non-transparent proxying requires that the client browsers be configured with
-the proxy settings before requests are redirected. The advantage of this is
-that the client web browser can detect that a proxy is in use and can behave
-accordingly. In addition, web-transmitted malware can sometimes be blocked by
-a non-transparent web proxy, since they are not aware of the proxy settings.
-
-:::{code-block} none
-set service webproxy listen-address 192.0.2.1 disable-transparent
-:::
-```
-
-
-```{cfgcmd} set service webproxy listen-address \<address\> port \<port\>
-
-Sets the listening port for a listening address. This overrides the default
-port of 3128 on the specific listen address.
-
-:::{code-block} none
-set service webproxy listen-address 192.0.2.1 port 8080
-:::
-```
-```{cfgcmd} set service webproxy reply-block-mime \<mime\>
-
-Used to block a specific mime-type.
-
-:::{code-block} none
-# block all PDFs
-set service webproxy reply-block-mime application/pdf
-:::
-```
-```{cfgcmd} set service webproxy reply-body-max-size \<size\>
-
-Specifies the maximum size of a reply body in KB, used to limit the reply
-size.
-
-All reply sizes are accepted by default.
-
-:::{code-block} none
-set service webproxy reply-body-max-size 2048
-:::
-```
-
-
-```{cfgcmd} set service webproxy safe-ports \<port\>
-
-Add new port to Safe-ports acl. Ports included by default in Safe-ports acl:
-21, 70, 80, 210, 280, 443, 488, 591, 777, 873, 1025-65535
-```
-
-
-```{cfgcmd} set service webproxy ssl-safe-ports \<port\>
-
-Add new port to SSL-ports acl. Ports included by default in SSL-ports acl:
-443
-```
-
-### Authentication
-
-The embedded Squid proxy can use LDAP to authenticate users against a company
-wide directory. The following configuration is an example of how to use Active
-Directory as authentication backend. Queries are done via LDAP.
-
-```{cfgcmd} set service webproxy authentication children \<number\>
-
-Maximum number of authenticator processes to spawn. If you start too few
-Squid will have to wait for them to process a backlog of credential
-verifications, slowing it down. When password verifications are done via a
-(slow) network you are likely to need lots of authenticator processes.
-
-This defaults to 5.
-
-:::{code-block} none
-set service webproxy authentication children 10
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication credentials-ttl \<time\>
-
-Specifies how long squid assumes an externally validated username:password
-pair is valid for - in other words how often the helper program is called for
-that user. Set this low to force revalidation with short lived passwords.
-
-Time is in minutes and defaults to 60.
-
-:::{code-block} none
-set service webproxy authentication credentials-ttl 120
-:::
-```
-```{cfgcmd} set service webproxy authentication method \<ldap\>
-
-Proxy authentication method, currently only LDAP is supported.
-
-:::{code-block} none
-set service webproxy authentication method ldap
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication realm
-
-Specifies the protection scope (aka realm name) which is to be reported to
-the client for the authentication scheme. It is commonly part of the text
-the user will see when prompted for their username and password.
-
-:::{code-block} none
-set service webproxy authentication realm "VyOS proxy auth"
-:::
-```
-
-#### LDAP
-
-```{cfgcmd} set service webproxy authentication ldap base-dn \<base-dn\>
-
-Specifies the base DN under which the users are located.
-
-:::{code-block} none
-set service webproxy authentication ldap base-dn DC=vyos,DC=net
-:::
-```
-```{cfgcmd} set service webproxy authentication ldap bind-dn \<bind-dn\>
-
-The DN and password to bind as while performing searches.
-
-:::{code-block} none
-set service webproxy authentication ldap bind-dn CN=proxyuser,CN=Users,DC=vyos,DC=net
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap filter-expression \<expr\>
-
-LDAP search filter to locate the user DN. Required if the users are in a
-hierarchy below the base DN, or if the login name is not what builds the user
-specific part of the users DN.
-
-The search filter can contain up to 15 occurrences of %s which will be
-replaced by the username, as in "uid=%s" for {rfc}`2037` directories. For a
-detailed description of LDAP search filter syntax see {rfc}`2254`.
-
-:::{code-block} none
-set service webproxy authentication ldap filter-expression (cn=%s)
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap password \<password\>
-
-The DN and password to bind as while performing searches. As the password
-needs to be printed in plain text in your Squid configuration it is strongly
-recommended to use a account with minimal associated privileges. This to limit
-the damage in case someone could get hold of a copy of your Squid
-configuration file.
-
-:::{code-block} none
-set service webproxy authentication ldap password vyos
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap persistent-connection
-
-Use a persistent LDAP connection. Normally the LDAP connection is only open
-while validating a username to preserve resources at the LDAP server. This
-option causes the LDAP connection to be kept open, allowing it to be reused
-for further user validations.
-
-Recommended for larger installations.
-
-:::{code-block} none
-set service webproxy authentication ldap persistent-connection
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap port \<port\>
-
-Specify an alternate TCP port where the ldap server is listening if other than
-the default LDAP port 389.
-
-:::{code-block} none
-set service webproxy authentication ldap port 389
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap server \<server\>
-
-Specify the LDAP server to connect to.
-
-:::{code-block} none
-set service webproxy authentication ldap server ldap.vyos.net
-:::
-```
-```{cfgcmd} set service webproxy authentication ldap use-ssl
-
-Use TLS encryption.
-
-:::{code-block} none
-set service webproxy authentication ldap use-ssl
-:::
-```
-```{cfgcmd} set service webproxy authentication ldap username-attribute \<attr\>
-
-Specifies the name of the DN attribute that contains the username/login.
-Combined with the base DN to construct the users DN when no search filter is
-specified (filter-expression).
-
-Defaults to 'uid'
-
-:::{note}
-This can only be done if all your users are located directly under
-the same position in the LDAP tree and the login name is used for naming
-each user object. If your LDAP tree does not match these criterias or if you
-want to filter who are valid users then you need to use a search filter to
-search for your users DN (filter-expression).
-:::
-
-:::{code-block} none
-set service webproxy authentication ldap username-attribute uid
-:::
-```
-
-
-```{cfgcmd} set service webproxy authentication ldap version \<2 | 3\>
-
-LDAP protocol version. Defaults to 3 if not specified.
-
-:::{code-block} none
-set service webproxy authentication ldap version 2
-:::
-```
-
-### URL filtering
-
-```{include} /_include/need_improvement.txt
-```
-```{cfgcmd} set service webproxy url-filtering disable
-
-Disables web filtering without discarding configuration.
-
-:::{code-block} none
-set service webproxy url-filtering disable
-:::
-```
-
-## Operation
-
-```{include} /_include/need_improvement.txt
-```
-
-### Filtering
-#### Update
-
-If you want to use existing blacklists you have to create/download a database
-first. Otherwise you will not be able to commit the config changes.
-
-```{opcmd} update webproxy blacklists
-
-Download/Update complete blacklist
-
-:::{code-block} none
-vyos@vyos:~$ update webproxy blacklists
-Warning: No url-filtering blacklist installed
-Would you like to download a default blacklist? [confirm][y]
-Connecting to ftp.univ-tlse1.fr (193.49.48.249:21)
-blacklists.gz        100% |*************************************************************************************************************| 17.0M  0:00:00 ETA
-Uncompressing blacklist...
-Checking permissions...
-Skip link for   [ads] -> [publicite]
-Building DB for [adult/domains] - 2467177 entries
-Building DB for [adult/urls] - 67798 entries
-Skip link for   [aggressive] -> [agressif]
-Building DB for [agressif/domains] - 348 entries
-Building DB for [agressif/urls] - 36 entries
-Building DB for [arjel/domains] - 69 entries
-...
-Building DB for [webmail/domains] - 374 entries
-Building DB for [webmail/urls] - 9 entries
-The webproxy daemon must be restarted
-Would you like to restart it now? [confirm][y]
-[ ok ] Restarting squid (via systemctl): squid.service.
-vyos@vyos:~$
-:::
-```
-```{opcmd} update webproxy blacklists category \<category\>
-
-Download/Update partial blacklist.
-
-Use tab completion to get a list of categories.
-```
-
-- To auto update the blacklist files
-
-  `set service webproxy url-filtering squidguard auto-update update-hour 23`
-
-- To configure blocking add the following to the configuration
-
-  `set service webproxy url-filtering squidguard block-category ads`
-
-  `set service webproxy url-filtering squidguard block-category malware`
-
-#### Bypassing the webproxy
-
-```{include} /_include/need_improvement.txt
-```
-
-Some services don't work correctly when being handled via a web proxy.
-So sometimes it is useful to bypass a transparent proxy:
-
-- To bypass the proxy for every request that is directed to a specific
-  destination:
-
-  `set service webproxy whitelist destination-address 198.51.100.33`
-
-  `set service webproxy whitelist destination-address 192.0.2.0/24`
-
-- To bypass the proxy for every request that is coming from a specific source:
-
-  `set service webproxy whitelist source-address 192.168.1.2`
-
-  `set service webproxy whitelist source-address 192.168.2.0/24`
-
-  (This can be useful when a called service has many and/or often changing
-  destination addresses - e.g. Netflix.)
-
-## Examples
-
-```none
-vyos@vyos# show service webproxy
- authentication {
-     children 5
-     credentials-ttl 60
-     ldap {
-         base-dn DC=example,DC=local
-         bind-dn CN=proxyuser,CN=Users,DC=example,DC=local
-         filter-expression (cn=%s)
-         password Qwert1234
-         server ldap.example.local
-         username-attribute cn
-     }
-     method ldap
-     realm "VyOS Webproxy"
- }
- cache-size 100
- default-port 3128
- listen-address 192.168.188.103 {
-     disable-transparent
- }
-```
-
-[squid]: http://www.squid-cache.org/
-[squidguard]: http://www.squidguard.org/