On 2025-04-23 20:21, Stuart Henderson wrote:
> On 2025/04/23 15:29, Hugo Osvaldo Barrera wrote:
> > Port 1883 is used for plain-text mqtt and 8883 is used for TLS+mqtt.
> > See: https://www.iana.org/assignments/service-names-port-numbers/service-names-port-numbers.xhtml?search=mqtt
> 
> Many IANA registrations are for both TCP and UDP although nany
> protocols never or rarely run over both. We typically only list a
> port/protocol if in very common usage.
> 
> I agree with adding MQTT over TCP, this is a common protocol and
> reserving this port to prevent it being used in the dynamic range, which
> is a side-effect of listing in services(5), makes sense.
> 
> I think we should skip UDP.

Attaching an updated diff.

-- 
Hugo
diff --git etc/services etc/services
index 0405aa38d42..e3e9a059dd7 100644
--- etc/services
+++ etc/services
@@ -190,6 +190,7 @@ pptp		1723/tcp			# Point-to-Point Tunneling Protocol
 pptp		1723/udp			# Point-to-Point Tunneling Protocol
 radius		1812/udp			# radius authentication
 radacct		1813/udp	radius-acct	# radius accounting
+mqtt		1883/tcp			# Message Queuing Telemetry Transport Protocol
 ssdp		1900/tcp			# SSDP
 ssdp		1900/udp			# SSDP
 nfsd		2049/udp	nfs		# NFS server
@@ -275,6 +276,7 @@ afs3-rmtsys	7009/tcp			# AFS remote cache manager service
 afs3-rmtsys	7009/udp			# AFS remote cache manager service
 puppet		8140/tcp			# Puppet master service
 matrix-fed	8448/tcp			# Matrix Federation Protocol
+secure-mqtt	8883/tcp			# Secure MQTT
 ub-dns-control	8953/tcp			# unbound dns nameserver control
 git		9418/tcp			# git pack transfer service
 git		9418/udp			# git pack transfer service

• mqtt.diff (901B)