Questo è davvero strano - ho una soluzione per questo (continua a leggere), ma mi piacerebbe sapere perché funziona.
Avevo una configurazione VPN che funzionava bene con un server WinServer2003 e un client Vista.
Quindi ho installato una nuova casella Win7 per accedere allo stesso server. Il server esegue WINS.
Entrambi i client potrebbero accedere alla VPN in modo accurato e eseguire il ping delle macchine sul lato server per indirizzo IP4.
Ma SOLO il client Vista potrebbe eseguire il ping dei computer in base all'indirizzo NETBIOS (nome del computer). Il client Win7 ha appena restituito "Impossibile trovare l'host".
Per quanto ne so, i client sono configurati in modo identico.
Per caso, mentre giocherellando, ho scoperto che se eseguo un tracert sul client Win7 - tracciando il percorso verso qualsiasi macchina sul lato server - quindi DOPO CHE NETBIOS funziona.
Ad esempio (questo proviene dalla riga di comando di Cygwin nella casella Win7, con password redatte, ecc.):
$ rasdial "vpnName" Dave passWord
Connecting to vpnName.
Verifying username and password...
Registering your computer on the network...
Successfully connected to vpnName. Command completed successfully.
Dave@QUIET ~
$ ping henshaw
Ping request could not find host henshaw. Please check the name and try again.
Dave@QUIET ~
$ tracert 10.1.10.1
Tracing route to www [10.1.10.1] over a maximum of 30 hops:
1 39 ms 47 ms 49 ms ASH [10.1.10.184]
2 44 ms 31 ms 32 ms www [10.1.10.1]
Trace complete.
$ ping henshaw
Pinging henshaw [10.1.10.92] with 32 bytes of data:
Reply from 10.1.10.92: bytes=32 time=36ms TTL=127
Reply from 10.1.10.92: bytes=32 time=46ms TTL=127
Reply from 10.1.10.92: bytes=32 time=35ms TTL=127
Reply from 10.1.10.92: bytes=32 time=41ms TTL=127
Ping statistics for 10.1.10.92:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 35ms, Maximum = 46ms, Average = 39ms
(ASH è la scatola del server Server2003, 10.1.10.1 è il gateway di rete.)
Che diavolo sta succedendo? Perché la scatola Win7 agisce diversamente in primo luogo, e perché tracert la corregge?
--Dave
Inserito il:
Per suggerimento di @Sane, ecco l'ipconfig tutto l'output di entrambi i client:
Scatola Vista:
Dave@Tower ~
$ ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Tower
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : home
PPP adapter vpnName:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : vpnName
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.1.10.80(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.10.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : NVIDIA nForce 10/100/1000 Mbps Ethernet
Physical Address. . . . . . . . . : 6C-F0-49-D1-92-FC
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::1d56:57b0:5c40:8ea2%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.11(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Tuesday, November 20, 2012 12:52:51 PM
Lease Expires . . . . . . . . . . : Wednesday, November 21, 2012 12:52:50 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 258797641
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-14-7D-F7-96-6C-F0-49-D1-92-FC
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Local Area Connection* 6:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 7:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:9d38:6ab8:93:2ec:3f57:fef4(Preferred)
Link-local IPv6 Address . . . . . : fe80::93:2ec:3f57:fef4%11(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . : home
Description . . . . . . . . . . . : isatap.home
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Scatola Win7:
Dave@QUIET ~
$ ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : QUIET
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
PPP adapter vpnName:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : vpnName
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.1.10.108(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.1.10.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Intel(R) 82578DC Gigabit Network Connection
Physical Address. . . . . . . . . : 00-1C-C0-F7-54-2F
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::3c6a:4873:97c:e773%10(Preferred)
IPv4 Address. . . . . . . . . . . : 192.168.1.110(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : 192.168.1.1
DHCPv6 IAID . . . . . . . . . . . : 234888384
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-17-C6-DC-78-00-1C-C0-F7-54-2F
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.{13A00E9E-CF57-4B02-B3F6-21929585E6FC}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : 2001:0:4137:9e76:400:32e2:9d91:5c30(Preferred)
Link-local IPv6 Address . . . . . : fe80::400:32e2:9d91:5c30%12(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter isatap.{B34461EA-B740-4553-A1A7-570852066611}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #2
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes