Eu tenho um netbook Acer Aspire One (722-0828), executando o Windows 7 Home Premium de 64 bits.
Quando conectado via cabo ethernet, a rede funciona normalmente.
Quando conectado via Wi-Fi, o IP funciona, o ICMP funciona, o DNS funciona:
C:\Users\Tony>ping google.com
Pinging google.com [74.125.225.196] with 32 bytes of data:
Reply from 74.125.225.196: bytes=32 time=27ms TTL=54
Reply from 74.125.225.196: bytes=32 time=24ms TTL=54
Reply from 74.125.225.196: bytes=32 time=36ms TTL=54
Reply from 74.125.225.196: bytes=32 time=28ms TTL=54
Ping statistics for 74.125.225.196:
Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 24ms, Maximum = 36ms, Average = 28ms
Mas não consigo iniciar conexões TCP da máquina com Windows para nenhum outro lugar. HTTP falha (tentou IE, FF, Opera e Chrome); PuTTY falha (telnet e ssh); o ftp falha, o DNS-sobre-TCP (nslookup com "set vc") falha.
Aqui, vejo que o DNS-over-UDP está funcionando, mesmo para servidores remotos; que me diz que o IP e o UDP estão funcionando. Mas assim que eu faço set vc
, a próxima pesquisa trava:
C:\Users\Tony>nslookup
Default Server: UnKnown
Address: 192.168.1.1
> acer.com
Server: UnKnown
Address: 192.168.1.1
Non-authoritative answer:
Name: acer.com
Address: 193.0.238.166
> acer.com 8.8.8.8
Server: [8.8.8.8]
Address: 8.8.8.8
Non-authoritative answer:
Name: acer.com
Address: 193.0.238.166
> set vc
> acer.com
Server: UnKnown
Address: 192.168.1.1
^C
C:\Users\Tony>nslookup
Default Server: UnKnown
Address: 192.168.1.1
> set vc
> acer.com 8.8.8.8
Server: [8.8.8.8]
Address: 8.8.8.8
^C
C:\Users\Tony>
Outros dispositivos (laptops OSX, dispositivos iOS, dispositivos Android, outros laptops Windows) funcionam bem na mesma rede Wi-Fi.
Usando um sniffer de pacotes, vejo que a máquina do windows envia o pacote SYN inicial, e o servidor responde com SYN + ACK ... mas a pilha TCP do Windows nunca parece vê-lo, pois não há resposta, e o máquina do Windows, eventualmente, tenta novamente a conexão com outro pacote SYN.
Solução de problemas, nenhuma das quais resolveu a situação:
Excluiu / recriou as duas interfaces.
Redefina a pilha ip no Windows.
Desativar o Firewall do Windows.
Desativado IPv6 na interface Wi-Fi.
Confirme que a rede Wi-Fi está identificada como "Rede doméstica".
Quaisquer sugestões seriam muito bem-vindas.
Aqui está a saída de "ipconfig / all":
C:\Users\Tony>ipconfig /all
Windows IP Configuration
Host Name . . . . . . . . . . . . : Tony-Netbook
Primary Dns Suffix . . . . . . . :
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : No
WINS Proxy Enabled. . . . . . . . : No
Ethernet adapter Local Area Connection:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR8152/8158 PCI-E Fast Ethernet C
ontroller (NDIS 6.20)
Physical Address. . . . . . . . . : DC-0E-A1-51-1C-1D
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Atheros AR5B125 Wireless Network Adapter
Physical Address. . . . . . . . . : 60-D8-19-62-F4-0B
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 192.168.1.170(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Lease Obtained. . . . . . . . . . : Wednesday, January 23, 2013 12:38:54 PM
Lease Expires . . . . . . . . . . : Thursday, January 24, 2013 12:38:54 PM
Default Gateway . . . . . . . . . : 192.168.1.1
DHCP Server . . . . . . . . . . . : 192.168.1.1
DNS Servers . . . . . . . . . . . : 192.168.1.1
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter isatap.{993CDEB4-B0C8-41FD-A3F1-DE951DB1FF9F}:
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
Tunnel adapter Local Area Connection* 9:
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. . . . . . . . . . . : 2001:0:9d38:6ab8:105c:25e6:3f57:fe55(Pref
erred)
Link-local IPv6 Address . . . . . : fe80::105c:25e6:3f57:fe55%11(Preferred)
Default Gateway . . . . . . . . . : ::
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter isatap.{88C7FD80-32F0-4C45-9D1A-06EB7A869BB9}:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #3
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes