Setup of a Prosody XMPP Server on Debian 12

scp root@<OLD_SERVER>:/etc/prosody/prosody.cfg.lua prosody.cfg.lua
scp prosody.cfg.lua root@<NEW_SERVER>:/etc/prosody/prosody.cfg.lua

tar czf prosody_data_backup.tar.gz /var/lib/prosody

scp user@<OLD_SERVER>:prosody_data_backup.tar.gz .
scp prosody_data_backup.tar.gz  user@<NEW_SERVER>:

tar xzf prosody_data_backup.tar.gz

sudo mv var/lib/prosody /var/lib/

admins = { "xxxxxxxxx@foo.net" }


modules_enabled = {

    -- Generally required
        "disco"; -- Service discovery
        "roster"; -- Allow users to have a roster. Recommended ;)
        "saslauth"; -- Authentication for clients and servers. Recommended if you want to log in.
        "tls"; -- Add support for secure TLS on c2s/s2s connections

    -- Not essential, but recommended
        "blocklist"; -- Allow users to block communications with other users
        "bookmarks"; -- Synchronise the list of open rooms between clients
        "carbons"; -- Keep multiple clients in sync
        "dialback"; -- s2s dialback support
        "limits"; -- Enable bandwidth limiting for XMPP connections
        "pep"; -- Enables users to publish their avatar, mood, activity, playing music and more
        "smacks"; -- Stream management and resumption (XEP-0198)
        "private"; -- Private XML storage (for room bookmarks, etc.)
        "server_contact_info"; -- XEP-0157: Contact Addresses for XMPP Services (Abuse)
        "vcard4"; -- User profiles (stored in PEP)
        "vcard_legacy"; -- Conversion between legacy vCard and PEP Avatar, vcard

     -- Nice to have
        "csi_simple"; -- XEP-0352 Simple Mobile optimizations
        --"invites"; -- Create and manage invites
        --"invites_adhoc"; -- Allow admins/users to create invitations via their client
        --"invites_register"; -- Allows invited users to create accounts SECURITY CRITICAL
        "mam"; -- XEP-0313 Store messages in an archive and allow users to access it PRIVACY CRITICAL
        "ping"; -- Replies to XMPP pings with pongs
        "register"; -- Allow users to register on this server using a client and change passwords
        "time"; -- Let others know the time here on this server
        "uptime"; -- Report how long server has been running
        "user_account_management";
        "version"; -- Replies to server version requests

    -- Admin interfaces
        "admin_adhoc"; -- Allows administration via an XMPP client that supports ad-hoc commands
        "admin_shell"; -- Allow secure administration via 'prosodyctl shell'
        --"admin_telnet"; -- Opens telnet console interface on localhost port 5582

    -- HTTP modules
        --"bosh"; -- Enable BOSH clients, aka "Jabber over HTTP"
        --"websocket"; -- XMPP over WebSockets
        --"http_files"; -- Serve static files from a directory over HTTP

    -- Other specific functionality
        --"announce"; -- Send announcement to all online users
        "external_services";  -- XEP-0215: External Service Discovery (STUN)
        --"groups"; -- Shared roster support
        --"legacyauth"; -- Legacy authentication. Only used by some old clients and bots.
        "mimicking"; -- Prevent spoofing attacks
        "muc_limits"; -- Prevent room floods
        --"motd"; -- Send a message to users when they log in
        "proxy65"; -- XEP-0065 Enables a file transfer proxy service which clients behind NAT can use
        --"s2s_bidi"; -- Bi-directional server-to-server (XEP-0288)
        --"server_contact_info"; -- Publish contact information for this service
        "tombstones";
        "watchregistrations"; -- Alert admins of registrations
        --"welcome"; -- Welcome users who register accounts

    -- Community provided modules
        "cloud_notify"; -- XEP-0357 Support for sending “push notifications” to clients that need it, typically those running on certain mobile devices
        "cloud_notify_extensions"; -- XEP-0357 This is a meta-module that simply enables all the modules required to support Siskin or Snikket iOS
}

modules_disabled = {
    -- "offline"; -- Store offline messages
    -- "c2s"; -- Handle client connections
    -- "s2s"; -- Handle server-to-server connections
    -- "posix"; -- POSIX functionality, sends server to background, enables syslog, etc.
}

-- TODO: Fill out with real data.
contact_info = {
    abuse = { "mailto:abuse@localhost", "xmpp:abuse@localhost" };
    admin = { "mailto:admin@localhost", "xmpp:admin@localhost" };
    feedback = { "http://localhost/feedback.html", "mailto:feedback@localhost", "xmpp:feedback@localhost" };
    sales = { "xmpp:sales@localhost" };
    security = { "xmpp:security@localhost" };
    status = { "gopher://status.localhost" };
    support = { "https://localhost/support.html", "xmpp:support@localhost" };
}


external_services = {
    {
        type = "stun";
        transport = "udp";
        host = "xx.xx.xxx.xx";
        port = 3478;
        secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
    };
    {
        type = "turn";
        transport = "udp";
        host = "xx.xx.xxx.xx";
        port = 3478;
        secret = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx"
    };
}


allow_registration = true
watchregistrations = true
c2s_require_encryption = true

s2s_require_encryption = true
s2s_secure_auth = true
--s2s_insecure_domains = { "insecure.example" }
--s2s_secure_domains = { "jabber.org" }


-- Rate limits for incoming client and server connections
limits = {
  c2s = {
    -- rate = "10kb/s";
    rate = "3kb/s";
    burst = "2s";
  };
  s2sin = {
    -- rate = "30kb/s";
    rate = "10kb/s";
    burst = "5s";
  };
}


-- Select the authentication backend to use. The 'internal' providers
-- use Prosody's configured data storage to store the authentication data.

authentication = "internal_hashed"

-- Select the storage backend to use. By default Prosody uses flat files
-- in its configured data directory, but it also supports more backends
-- through modules. An "sql" backend is included by default, but requires
-- additional dependencies. See https://prosody.im/doc/storage for more info.

--storage = "sql" -- Default is "internal" (Note: "sql" requires installed
-- lua-dbi RPM package)

-- For the "sql" backend, you can uncomment *one* of the below to configure:
--sql = { driver = "SQLite3", database = "prosody.sqlite" } -- Default. 'database' is the filename.
--sql = { driver = "MySQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }
--sql = { driver = "PostgreSQL", database = "prosody", username = "prosody", password = "secret", host = "localhost" }


-- Archiving configuration
-- If mod_mam is enabled, Prosody will store a copy of every message. This
-- is used to synchronize conversations between multiple clients, even if
-- they are offline. This setting controls how long Prosody will keep
-- messages in the archive before removing them.

archive_expires_after = "1w" -- Remove archived messages after 1 week

-- You can also configure messages to be stored in-memory only. For more
-- archiving options, see https://prosody.im/doc/modules/mod_mam


-- Logging configuration
-- For advanced logging see https://prosody.im/doc/logging
log = {
    -- Log everything of level "info" and higher (that is, all except "debug" messages)
    -- to /var/log/prosody/prosody.log and errors also to /var/log/prosody/prosody.err
    info = "/var/log/prosody/prosody.log"; -- Change 'info' to 'debug' for verbose logging
    error = "/var/log/prosody/prosody.err"; -- Log errors also to file
    -- error = "*syslog"; -- Log errors also to syslog
    -- "*console"; -- Log to the console, useful for debugging with daemonize=false
}


-- Uncomment to enable statistics
-- For more info see https://prosody.im/doc/statistics
-- statistics = "internal"


-- Certificates

-- Location of directory to find certificates in (relative to main config file):
certificates = "certs/"

-- HTTPS currently only supports a single certificate, specify it here:
--https_certificate = "/etc/prosody/certs/localhost.crt"

-- POSIX configuration
-- For more info see https://prosody.im/doc/modules/mod_posix
pidfile = "/run/prosody/prosody.pid";
--daemonize = false -- Default is "true"


----------- Virtual hosts -----------
-- You need to add a VirtualHost entry for each domain you wish Prosody to serve.
-- Settings under each VirtualHost entry apply *only* to that host.

--VirtualHost "example.com"
--    certificate = "/path/to/example.crt"

----------- Virtual host: foo.net  -----------

VirtualHost "foo.net"

-- XEP-0045 Multi User Chat
Component "conference.foo.net" "muc"
    name = "The foo.net chatrooms server"
    restrict_room_creation = false

modules_enabled = {
    "muc_mam", -- XEP-0313: Message Archive Management (Multi-User Chat)
    "vcard_muc" -- XEP-0153 vCard-Based avatar
}

-- XEP-0363: HTTP File Upload
Component "upload.foo.net" "http_file_share"
http_file_share_size_limit = 1024 * 1024 * 200 -- 200 MB
http_file_share_daily_quota = 1024 * 1024 * 200 -- 500 MB
http_file_share_expires_after = 60 * 60 * 24 * 7 -- a week in seconds


----------- Virtual host: bar.net -----------

VirtualHost "bar.net"

-- XEP-0045 Multi User Chat
Component "conference.bar.net" "muc"
    name = "The bar.net chatrooms server"
    restrict_room_creation = false

modules_enabled = {
    "muc_mam", -- XEP-0313: Message Archive Management (Multi-User Chat)
    "vcard_muc" -- XEP-0153 vCard-Based avatar
}

Component "upload.bar.net" "http_file_share"
http_file_share_size_limit = 1024 * 1024 * 200 -- 200 MB
http_file_share_daily_quota = 1024 * 1024 * 200 -- 500 MB
http_file_share_allowed_file_types = {
    }
http_file_share_expires_after = 60 * 60 * 24 * 7 -- a week in seconds


------ Additional config files ------
-- For organizational purposes you may prefer to add VirtualHost and
-- Component definitions in their own config files. This line includes
-- all config files in /etc/prosody/conf.d/

-- Include "conf.d/*.cfg.lua"