Saturday, December 14, 2024

Why can’t my laptop computer detect a specific local area network (LAN) device using its IP address?

At home, I have a Synology machine situated in my residence. 192.168.1.180. My iPhone can seamlessly connect to the machine via IP address when connected to WiFi without requiring any additional authentication. My laptop computer, connected to the same WiFi network, fails to:

  • Using a Synology app on your cellphone effectively connects you to the desired IP address, delivering reliable results. When I attempt to use the Equal app on my laptop, it consistently fails to connect.

  • When accessing the IP address in Safari on my cellphone, I’m presented with a login prompt. If you enter the IP address in Safari on your laptop, it is likely to crash or freeze occasionally. When I access the IP address in Chrome on my laptop, I quickly receive an ERR_ADDRESS_INVALID display screen.

Terminal output revealing insights into laptop’s system configuration and performance.

phrogz@PhrogzBook ~ % ping 192.168.1.180; (no response)    
PING 192.168.1.180 (192.168.1.180): request timed out
PING 192.168.1.180 (192.168.1.180): request timed out
^C
--- 192.168.1.180 ping statistics ---
3 packets transmitted, 0 packets received, 100% packet loss

phrogz@PhrogzBook ~ % sudo traceroute 192.168.1.180; (output) unavailable due to firewall being disabled.

phrogz@PhrogzBook ~ % sudo /usr/libexec/ApplicationFirewall/socketfilterfw --getglobalstate; Firewall is currently disabled. (State = 0)

phrogz@PhrogzBook ~ % ifconfig
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
    choices=1203<RXCSUM,TXCSUM,TXSTATUS,SW_TIMESTAMP>
    inet 127.0.0.1 netmask 0xff000000
    inet6 ::1 prefixlen 128 
    inet6 fe80::1percentlo0 prefixlen 64 scopeid 0x1 
    nd6 choices=201<PERFORMNUD,DAD>
gif0: flags=8010<POINTOPOINT,MULTICAST> mtu 1280
stf0: flags=0<> mtu 1280
anpi0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:40
    media: none
    standing: inactive
anpi2: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:42
    media: none
    standing: inactive
anpi1: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:41
    media: none
    standing: inactive
en4: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:20
    nd6 choices=201<PERFORMNUD,DAD>
    media: none
    standing: inactive
en5: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:21
    nd6 choices=201<PERFORMNUD,DAD>
    media: none
    standing: inactive
en6: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether c6:83:5f:2c:6e:22
    nd6 choices=201<PERFORMNUD,DAD>
    media: none
    standing: inactive
en1: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    choices=460<TSO4,TSO6,CHANNEL_IO>
    ether 36:f3:65:f4:1f:80
    media: autoselect <full-duplex>
    standing: inactive
en2: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    choices=460<TSO4,TSO6,CHANNEL_IO>
    ether 36:f3:65:f4:1f:84
    media: autoselect <full-duplex>
    standing: inactive
en3: flags=8963<UP,BROADCAST,SMART,RUNNING,PROMISC,SIMPLEX,MULTICAST> mtu 1500
    choices=460<TSO4,TSO6,CHANNEL_IO>
    ether 36:f3:65:f4:1f:88
    media: autoselect <full-duplex>
    standing: inactive
bridge0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=63<RXCSUM,TXCSUM,TSO4,TSO6>
    ether 36:f3:65:f4:1f:80
    Configuration:
        id 0:0:0:0:0:0 precedence 0 hellotime 0 fwddelay 0
        maxage 0 holdcnt 0 proto stp maxaddr 100 timeout 1200
        root id 0:0:0:0:0:0 precedence 0 ifcost 0 port 0
        ipfilter disabled flags 0x0
    member: en1 flags=3<LEARNING,DISCOVER>
            ifmaxaddr 0 port 10 precedence 0 path price 0
    member: en2 flags=3<LEARNING,DISCOVER>
            ifmaxaddr 0 port 11 precedence 0 path price 0
    member: en3 flags=3<LEARNING,DISCOVER>
            ifmaxaddr 0 port 12 precedence 0 path price 0
    nd6 choices=201<PERFORMNUD,DAD>
    media: <unknown kind>
    standing: inactive
ap1: flags=8802<BROADCAST,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether 7e:e9:1e:89:0f:cf
    media: autoselect
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=6460<TSO4,TSO6,CHANNEL_IO,PARTIAL_CSUM,ZEROINVERT_CSUM>
    ether 5c:e9:1e:89:0f:cf
    inet6 fe80::a8:c850:c9ad:8dbcpercenten0 prefixlen 64 secured scopeid 0xf 
    inet 192.168.1.13 netmask 0xffffff00 broadcast 192.168.1.255
    nd6 choices=201<PERFORMNUD,DAD>
    media: autoselect
    standing: lively
awdl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=6460<TSO4,TSO6,CHANNEL_IO,PARTIAL_CSUM,ZEROINVERT_CSUM>
    ether 36:37:dd:14:37:1b
    inet6 fe80::3437:ddff:fe14:371bpercentawdl0 prefixlen 64 scopeid 0x10 
    nd6 choices=201<PERFORMNUD,DAD>
    media: autoselect
    standing: lively
llw0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=400<CHANNEL_IO>
    ether 36:37:dd:14:37:1b
    inet6 fe80::3437:ddff:fe14:371bpercentllw0 prefixlen 64 scopeid 0x11 
    nd6 choices=201<PERFORMNUD,DAD>
    media: autoselect
    standing: inactive
utun0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
    inet6 fe80::9ea:f549:1e53:80efpercentutun0 prefixlen 64 scopeid 0x12 
    nd6 choices=201<PERFORMNUD,DAD>
utun1: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
    inet6 fe80::acdc:d2ca:9927:72dapercentutun1 prefixlen 64 scopeid 0x13 
    nd6 choices=201<PERFORMNUD,DAD>
utun2: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 2000
    inet6 fe80::b851:13d6:ae77:3168percentutun2 prefixlen 64 scopeid 0x14 
    nd6 choices=201<PERFORMNUD,DAD>
utun3: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1000
    inet6 fe80::ce81:b1c:bd2c:69epercentutun3 prefixlen 64 scopeid 0x15 
    nd6 choices=201<PERFORMNUD,DAD>
utun4: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
    inet6 fe80::5346:3701:5013:df6fpercentutun4 prefixlen 64 scopeid 0x16 
    nd6 choices=201<PERFORMNUD,DAD>
utun5: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1380
    inet6 fe80::bd02:a0ec:bc51:9adcpercentutun5 prefixlen 64 scopeid 0x17 
    nd6 choices=201<PERFORMNUD,DAD>
en7: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
    choices=6464<VLAN_MTU,TSO4,TSO6,CHANNEL_IO,PARTIAL_CSUM,ZEROINVERT_CSUM>
    ether b0:4f:13:25:b8:advert
    nd6 choices=201<PERFORMNUD,DAD>
    media: autoselect (none)
    standing: inactive

phrogz@PhrogzBook ~ % route -n get default

   path to: default
vacation spot: default
       masks: default
    gateway: 192.168.1.1
  interface: en0
      flags: <UP,GATEWAY,DONE,STATIC,PRCLONING,GLOBAL>
 recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
       0         0         0         0         0         0      1500         0 

I have VPN software installed on my laptop computer and phone, but none are currently active. I’m uncertain about what to search for right now to determine how a VPN might be interfering with my online activities?

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