My mosquitto broker is currently binded to address 192.168.2.1 on port 1883. Publishing and subscribing both work fine for programs running on the host machine where mosquitto is running (call this the Linux machine) But all remote machines cannot access the broker with pubs or subs (denote remote machines Wind10).
Client machines Wind10
They produce the following errors when attempting to publish either ---.1 or ---.104,
> .\mosquitto_pub -h 192.168.2.1 -p 1883 -t newsTest -m "remotePayload427" -u redacted -P redacted
Error: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond.
> .\mosquitto_pub -h 192.168.2.104 -p 1883 -t newsTest -m "remotePayload427" -u redacted -P redacted
Error: No connection could be made because the target machine actively refused it.
> ipconfig
Ethernet adapter Ethernet:
Connection-specific DNS Suffix . :
Link-local IPv6 Address . . . . . : fe80::64e1:2bdf:413b:7660%16
IPv4 Address. . . . . . . . . . . : 192.168.2.104
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.2.1
(there should be two screenshots here)
.
Host. Linux machine
The Linux machine is running the broker. Here is its current configuration.
]# more /etc/mosquitto/mosqClean.conf
user mosquit
bind_address 192.168.2.1
port 1883
protocol mqtt
log_dest syslog
log_type all
connection_messages true
log_timestamp true
allow_anonymous false
password_file /etc/mosquitto/plaintext
]# tail -f /var/log/mosquitto.log
2022-09-15T21:21:53.389752-04:00 mtcap mosquitto[23132]: mosquitto version 1.6.14 starting
2022-09-15T21:21:53.392443-04:00 mtcap mosquitto[23132]: Config loaded from /etc/mosquitto/mosqClean.conf.
2022-09-15T21:21:53.395912-04:00 mtcap mosquitto[23132]: Opening ipv4 listen socket on port 1883.
2022-09-15T21:21:53.406287-04:00 mtcap mosquitto[23132]: mosquitto version 1.6.14 running
]# netstat -t
Active Internet connections (w/o servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 192.168.2.1:ssh 192.168.2.104:56381 ESTABLISHED
tcp 0 0 192.168.2.1:ssh 192.168.2.104:50539 ESTABLISHED
tcp 0 0 192.168.2.1:ssh 192.168.2.104:50541 ESTABLISHED
]# netstat -l
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address Foreign Address State
tcp 0 0 0.0.0.0:http 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:domain 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:ssh 0.0.0.0:* LISTEN
tcp 0 0 192.168.2.1:1883 0.0.0.0:* LISTEN
tcp 0 0 0.0.0.0:https 0.0.0.0:* LISTEN
tcp 0 0 :::domain :::* LISTEN
tcp 0 0 :::ssh :::* LISTEN
tcp 0 0 :::https :::* LISTEN
udp 0 0 0.0.0.0:domain 0.0.0.0:*
udp 0 0 0.0.0.0:bootps 0.0.0.0:*
udp 0 0 :::domain :::*
]# more /etc/network/interfaces
auto lo
iface lo inet loopback
]# ifconfig
br0 Link encap:Ethernet HWaddr 00:08:00:4B:DB:96
inet addr:192.168.2.1 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:305983 errors:0 dropped:0 overruns:0 frame:0
TX packets:331765 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:24324031 (23.1 MiB) TX bytes:42568583 (40.5 MiB)
eth0 Link encap:Ethernet HWaddr 00:08:00:4B:DB:96
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:306569 errors:0 dropped:577 overruns:0 frame:0
TX packets:335070 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:24432998 (23.3 MiB) TX bytes:42747053 (40.7 MiB)
Interrupt:22 Base address:0xc000
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:65536 Metric:1
RX packets:165515 errors:0 dropped:0 overruns:0 frame:0
TX packets:165515 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:19274042 (18.3 MiB) TX bytes:19274042 (18.3 MiB)
Notice that in netstat -t there are active ssh sessions on ----.1 . Are these interfering with the broker?
[Updated on: Fri, 16 September 2022 02:16]
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