networking - UDP port binding to loopback interface
2014-07
Shadark
I've been trying to play a video game in multiplayer, but after trying a lot of time, I begun to realize there was some problem with my loopback interface (Windows 7)
I have UPnP activated in my router, ports forwarded (the one being relevant to the post is 9000 UDP) and I even put myself in the DMZ.
With that being said, apparently there's some bad configuration somewhere, and the port 9000 binds to 127.0.0.1 and doesn't send/receive any package.
note added by barlop [9388 is the PID of the game, as you can see it uses TCP port 443 and UDP ports 9100 and 9000, port 9000 on 127.0.0.1 ]
C:\Users\#####>netstat -ano | findstr 9388
TCP 192.168.0.205:50415 216.98.48.206:443 ESTABLISHED 9388
TCP 192.168.0.205:50416 216.98.48.206:443 ESTABLISHED 9388
TCP 192.168.0.205:50417 216.98.48.206:443 ESTABLISHED 9388
TCP 192.168.0.205:50418 216.98.48.206:443 ESTABLISHED 9388
TCP 192.168.0.205:50419 216.98.48.206:443 ESTABLISHED 9388
UDP 0.0.0.0:9103 *:* 9388
UDP 127.0.0.1:9000 *:* 9388
That's what netstat outputs when trying to join that multiplayer game (9388 being the PID of the process). Apparently, the game uses also port 9103 UDP but instead binding to loopback, binds to 0.0.0.0 and sends/receive packages correctly.
I also think there's something wrong with my interfaces because this program (UPnPTest), when executed, says that "Interface #0: 127.0.0.1" failed the test (at test 7) but no more interfaces appear, but when executed in my laptop, all my network interfaces appear.
Tried resseting all my network interfaces, disabling every network adapter except the one being used to connect (external USB adapter), redoing route tables, but nothing seems to work (at least in UPnPTest no more interfaces appear). I'm having quite the headache with this since it's not only for the videogame, but about knowing what's happening with the loopback interface.
This is the route print output:
===========================================================================
ILista de interfaces
39...00 c0 ca 75 d0 0b ......Atheros AR9271 Wireless Network Adapter
45...06 c0 ca 75 d0 0b ......Microsoft Virtual WiFi Miniport Adapter #6
16...00 22 f7 2a 4b f1 ......Tarjeta LAN inal mbrica 802.11n
1...........................Software Loopback Interface 1
27...00 00 00 00 00 00 00 e0 Adaptador ISATAP de Microsoft
56...00 00 00 00 00 00 00 e0 Adaptador ISATAP de Microsoft #2
50...00 00 00 00 00 00 00 e0 Adaptador ISATAP de Microsoft #3
26...00 00 00 00 00 00 00 e0 Teredo Tunneling Pseudo-Interface
===========================================================================
IPv4 Tabla de enrutamiento
===========================================================================
Rutas activas:
Destino de red M scara de red Puerta de enlace Interfaz M‚trica
0.0.0.0 0.0.0.0 192.168.0.1 192.168.0.117 281
127.0.0.0 255.0.0.0 En v¡nculo 127.0.0.1 306
127.0.0.1 255.255.255.255 En v¡nculo 127.0.0.1 306
127.255.255.255 255.255.255.255 En v¡nculo 127.0.0.1 306
192.168.0.0 255.255.255.0 En v¡nculo 192.168.0.117 281
192.168.0.117 255.255.255.255 En v¡nculo 192.168.0.117 281
192.168.0.255 255.255.255.255 En v¡nculo 192.168.0.117 281
224.0.0.0 240.0.0.0 En v¡nculo 127.0.0.1 306
224.0.0.0 240.0.0.0 En v¡nculo 192.168.0.117 281
255.255.255.255 255.255.255.255 En v¡nculo 127.0.0.1 306
255.255.255.255 255.255.255.255 En v¡nculo 192.168.0.117 281
===========================================================================
Rutas persistentes:
Direcci¢n de red M scara de red Direcci¢n de puerta de enlace M‚trica
0.0.0.0 0.0.0.0 192.168.0.1 Predeterminada
===========================================================================
IPv6 Tabla de enrutamiento
===========================================================================
Rutas activas:
Cuando destino de red m‚trica Puerta de enlace
26 58 ::/0 En v¡nculo
1 306 ::1/128 En v¡nculo
26 58 2001::/32 En v¡nculo
26 306 2001:0:5ef5:79fd:1ceb:1429:3f57:ff8a/128
En v¡nculo
39 281 fe80::/64 En v¡nculo
26 306 fe80::/64 En v¡nculo
26 306 fe80::1ceb:1429:3f57:ff8a/128
En v¡nculo
39 281 fe80::e517:ac71:4d99:c51a/128
En v¡nculo
1 306 ff00::/8 En v¡nculo
26 306 ff00::/8 En v¡nculo
39 281 ff00::/8 En v¡nculo
===========================================================================
Rutas persistentes:
Ninguno
And my interface report, generated by NetRouteView:
Interface Information
====================================================================================================
Admin Status IF Index Address Type Speed Oper Status Description
disabled 0x2 Other 1073741824 non-operational WAN Miniport (SSTP)
disabled 0x3 Other 1073741824 non-operational WAN Miniport (L2TP)
disabled 0x4 Other 1073741824 non-operational WAN Miniport (PPTP)
disabled 0x5 PPP 1073741824 non-operational WAN Miniport (PPPOE)
disabled 0x6 3C-26-20-52-41-53 Ethernet 1073741824 non-operational WAN Miniport (IPv6)
disabled 0x7 3C-26-20-52-41-53 Ethernet 1073741824 non-operational WAN Miniport (Network Monitor)
disabled 0x8 3C-26-20-52-41-53 Ethernet 1073741824 non-operational WAN Miniport (IP)
enabled 0x9 20-41-53-59-4E-FF PPP 1073741824 operational RAS Async Adapter
disabled 0xA 00-00-00-00-00-00-00-00 Other 0 non-operational WAN Miniport (IKEv2)
disabled 0xB 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0xC 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0xD 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0xE 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0xF 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
enabled 0x10 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n
disabled 0x11 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0x12 00-00-00-00-00-00-00-E0 Other 0 non-operational Teredo Tunneling Pseudo-Interface
disabled 0x13 F4-6D-04-AD-60-60 Ethernet 0 non-operational Realtek PCIe GBE Family Controller
disabled 0x14 00-C0-CA-52-6E-EA Other 0 non-operational Realtek RTL8187 Wireless 802.11b/g 54Mbps USB 2.0 Network Adapter
enabled 0x15 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter-Native WiFi Filter Driver-0000
disabled 0x16 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #2
disabled 0x17 00-26-83-19-5C-ED Ethernet 0 non-operational Dispositivo Bluetooth (Red de rea personal)
disabled 0x18 Other 0 non-operational Dispositivo Bluetooth (TDI protocolo RFCOMM)
disabled 0x19 00-A0-C6-00-00-00 Other 0 non-operational ZTE Mobile Broadband Network Adapter
enabled 0x1A 00-00-00-00-00-00-00-E0 Other 100000 operational Teredo Tunneling Pseudo-Interface
enabled 0x1B 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft
enabled 0x1C 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft-Netmon Lightweight Filter Driver-0000
disabled 0x1D 00-22-F7-2A-4B-F0 Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #5
enabled 0x1E 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter-QoS Packet Scheduler-0000
enabled 0x1F 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter-WFP LightWeight Filter-0000
enabled 0x20 00-00-00-00-00-00-00-E0 Other 100000 operational Teredo Tunneling Pseudo-Interface-Netmon Lightweight Filter Driver-0000
enabled 0x21 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter-Netmon Lightweight Filter Driver-0000
enabled 0x22 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter-Virtual WiFi Filter Driver-0000
enabled 0x23 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n-Native WiFi Filter Driver-0000
enabled 0x24 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n-QoS Packet Scheduler-0000
enabled 0x25 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n-WFP LightWeight Filter-0000
enabled 0x26 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n-Netmon Lightweight Filter Driver-0000
enabled 0x27 00-C0-CA-75-D0-0B Other 65000000 operational Atheros AR9271 Wireless Network Adapter
enabled 0x28 00-22-F7-2A-4B-F1 Other 0 non-operational Tarjeta LAN inal mbrica 802.11n-Virtual WiFi Filter Driver-0000
enabled 0x2D 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #6
enabled 0x2E 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #6-Native WiFi Filter Driver-0000
enabled 0x2F 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #6-QoS Packet Scheduler-0000
enabled 0x30 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #6-WFP LightWeight Filter-0000
enabled 0x31 06-C0-CA-75-D0-0B Other 0 non-operational Microsoft Virtual WiFi Miniport Adapter #6-Netmon Lightweight Filter Driver-0000
enabled 0x32 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft #3
enabled 0x33 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft #3-Netmon Lightweight Filter Driver-0000
enabled 0x38 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft #2
enabled 0x39 00-00-00-00-00-00-00-E0 Other 100000 non-operational Adaptador ISATAP de Microsoft #2-Netmon Lightweight Filter Driver-0000
eleven81
A company just asked me to open port 44380 in my firewall so that their software could work.
This made me wonder... what is the customary use for port 44380?
Sathya
According to IANA port assignments, 44380 is in the unassigned range. Maybe some custom software uses it for communication
pmcdproxy 44322/udp PCP server (pmcd) proxy
44323-44552 Unassigned
Can't find any entry for the same in Wikipedia either
akira
they could have asked you to open 44379 or 44381 as well. there is no .. real reason behind their question. they just need an open port.
John T
Probably just their custom software needs that port. I don't see any software that is IANA registered for that port.