与LAN计算机的套接字连接失败？

时间：2011-08-28 10:12:53

标签： c# sockets networking connection httplistener

PC1和PC2通过开关连接。 

PC1--<-->--SWITCH--<-->--PC2

两者都安装了Windows 7 PC1有防火墙。
PC2关闭了它的防火墙 他们可以共享文件 他们可以互相远程桌面。

端口80上的PC2上有一个HttpListener，但是无法通过端口80从PC1连接到PC2。
可能是什么问题呢？

PC1网络信息： 

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::5948:69a8:d29e:6bfe%11
   Autoconfiguration IPv4 Address. . : 169.254.107.254
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :

PC2网络信息： 

Ethernet adapter Local Area Connection:

   Connection-specific DNS Suffix  . :
   Link-local IPv6 Address . . . . . : fe80::5cd8:ed4e:8848:569%11
   Autoconfiguration IPv4 Address. . : 169.254.5.105
   Subnet Mask . . . . . . . . . . . : 255.255.0.0
   Default Gateway . . . . . . . . . :

telnet pc2 80，来自PC1 说：
无法打开与主机的连接，在端口80上：连接失败。

PC2上的

“netstat -anb”： 

Active Connections

  Proto  Local Address          Foreign Address        State
  TCP    0.0.0.0:80             0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    0.0.0.0:135            0.0.0.0:0              LISTENING
  RpcSs
 [svchost.exe]
  TCP    0.0.0.0:445            0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    0.0.0.0:554            0.0.0.0:0              LISTENING
 [wmpnetwk.exe]
  TCP    0.0.0.0:2869           0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    0.0.0.0:5357           0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    0.0.0.0:10243          0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    0.0.0.0:49152          0.0.0.0:0              LISTENING
 [wininit.exe]
  TCP    0.0.0.0:49153          0.0.0.0:0              LISTENING
  eventlog
 [svchost.exe]
  TCP    0.0.0.0:49154          0.0.0.0:0              LISTENING
  Schedule
 [svchost.exe]
  TCP    0.0.0.0:49155          0.0.0.0:0              LISTENING
 [services.exe]
  TCP    0.0.0.0:49156          0.0.0.0:0              LISTENING
 [lsass.exe]
  TCP    169.254.5.105:139      0.0.0.0:0              LISTENING
 Can not obtain ownership information
  TCP    [::]:80                [::]:0                 LISTENING
 Can not obtain ownership information
  TCP    [::]:135               [::]:0                 LISTENING
  RpcSs
 [svchost.exe]
  TCP    [::]:445               [::]:0                 LISTENING
 Can not obtain ownership information
  TCP    [::]:554               [::]:0                 LISTENING
 [wmpnetwk.exe]
  TCP    [::]:2869              [::]:0                 LISTENING
 Can not obtain ownership information
  TCP    [::]:3587              [::]:0                 LISTENING
  p2pimsvc
 [svchost.exe]
  TCP    [::]:5357              [::]:0                 LISTENING
 Can not obtain ownership information
  TCP    [::]:10243             [::]:0                 LISTENING
 Can not obtain ownership information
  TCP    [::]:49152             [::]:0                 LISTENING
 [wininit.exe]
  TCP    [::]:49153             [::]:0                 LISTENING
  eventlog
 [svchost.exe]
  TCP    [::]:49154             [::]:0                 LISTENING
  Schedule
 [svchost.exe]
  TCP    [::]:49155             [::]:0                 LISTENING
 [services.exe]
  TCP    [::]:49156             [::]:0                 LISTENING
 [lsass.exe]
  TCP    [fe80::5cd8:ed4e:8848:569%11]:445  [fe80::5948:69a8:d29e:6bfe%11]:49569  ESTABLISHED
 Can not obtain ownership information
  UDP    0.0.0.0:68             *:*                    
  Dhcp
 [svchost.exe]
  UDP    0.0.0.0:123            *:*                    
  W32Time
 [svchost.exe]
  UDP    0.0.0.0:3702           *:*                    
  EventSystem
 [svchost.exe]
  UDP    0.0.0.0:3702           *:*                    
  FDResPub
 [svchost.exe]
  UDP    0.0.0.0:3702           *:*                    
  FDResPub
 [svchost.exe]
  UDP    0.0.0.0:3702           *:*                    
  EventSystem
 [svchost.exe]
  UDP    0.0.0.0:5004           *:*                    
 [wmpnetwk.exe]
  UDP    0.0.0.0:5005           *:*                    
 [wmpnetwk.exe]
  UDP    0.0.0.0:5355           *:*                    
  Dnscache
 [svchost.exe]
  UDP    0.0.0.0:56904          *:*                    
  FDResPub
 [svchost.exe]
  UDP    0.0.0.0:56906          *:*                    
  EventSystem
 [svchost.exe]
  UDP    0.0.0.0:65438          *:*                    
  EventSystem
 [svchost.exe]
  UDP    127.0.0.1:1900         *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    127.0.0.1:56903        *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    169.254.5.105:137      *:*                    
 Can not obtain ownership information
  UDP    169.254.5.105:138      *:*                    
 Can not obtain ownership information
  UDP    169.254.5.105:1900     *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    169.254.5.105:56902    *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    [::]:123               *:*                    
  W32Time
 [svchost.exe]
  UDP    [::]:3540              *:*                    
  p2pimsvc
 [svchost.exe]
  UDP    [::]:3702              *:*                    
  FDResPub
 [svchost.exe]
  UDP    [::]:3702              *:*                    
  EventSystem
 [svchost.exe]
  UDP    [::]:3702              *:*                    
  FDResPub
 [svchost.exe]
  UDP    [::]:3702              *:*                    
  EventSystem
 [svchost.exe]
  UDP    [::]:5004              *:*                    
 [wmpnetwk.exe]
  UDP    [::]:5005              *:*                    
 [wmpnetwk.exe]
  UDP    [::]:5355              *:*                    
  Dnscache
 [svchost.exe]
  UDP    [::]:56905             *:*                    
  FDResPub
 [svchost.exe]
  UDP    [::]:56907             *:*                    
  EventSystem
 [svchost.exe]
  UDP    [::]:65439             *:*                    
  EventSystem
 [svchost.exe]
  UDP    [::1]:1900             *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    [::1]:56901            *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    [fe80::5cd8:ed4e:8848:569%11]:546  *:*                    
  Dhcp
 [svchost.exe]
  UDP    [fe80::5cd8:ed4e:8848:569%11]:1900  *:*                    
  SSDPSRV
 [svchost.exe]
  UDP    [fe80::5cd8:ed4e:8848:569%11]:56900  *:*                    
  SSDPSRV
 [svchost.exe]

EDIT1 - 一些Wireshark报告（telnet pc2 80）： 

62  28.544466   169.254.5.105   169.254.107.254 NBSS    126 Session request, to PC1<20> from PC2<00>
63  28.544538   169.254.107.254 169.254.5.105   NBSS    58  Positive session response
64  28.544761   169.254.5.105   169.254.107.254 SMB 213 Negotiate Protocol Request
65  28.545154   169.254.107.254 169.254.5.105   SMB2    228 NegotiateProtocol Response
66  28.545359   169.254.5.105   169.254.107.254 SMB2    162 NegotiateProtocol Request
67  28.545527   169.254.107.254 169.254.5.105   SMB2    228 NegotiateProtocol Response
68  28.546260   169.254.5.105   169.254.107.254 SMB2    220 SessionSetup Request, NTLMSSP_NEGOTIATE
69  28.546416   169.254.107.254 169.254.5.105   SMB2    339 SessionSetup Response, Error: STATUS_MORE_PROCESSING_REQUIRED, NTLMSSP_CHALLENGE
70  28.546836   169.254.5.105   169.254.107.254 SMB2    294 SessionSetup Request, NTLMSSP_AUTH, User: \, Unknown message type
71  28.547306   169.254.107.254 169.254.5.105   SMB2    159 SessionSetup Response, Unknown message type
72  28.547646   169.254.5.105   169.254.107.254 SMB2    162 TreeConnect Request Tree: \\PC1\IPC$
73  28.547723   169.254.107.254 169.254.5.105   SMB2    138 TreeConnect Response

EDIT2 - Wireshark，关注TCP流： 

12  2.197774    fe80::5948:69a8:d29e:6bfe   fe80::5cd8:ed4e:8848:569    TCP 86  50243 > http [SYN] Seq=0 Win=8192 Len=0 MSS=1440 WS=256 SACK_PERM=1
14  5.197056    fe80::5948:69a8:d29e:6bfe   fe80::5cd8:ed4e:8848:569    TCP 86  50243 > http [SYN] Seq=0 Win=8192 Len=0 MSS=1440 WS=256 SACK_PERM=1
19  11.197398   fe80::5948:69a8:d29e:6bfe   fe80::5cd8:ed4e:8848:569    TCP 82  50243 > http [SYN] Seq=0 Win=8192 Len=0 MSS=1440 SACK_PERM=1

SORRY GUYS：防火墙没有完全禁用专用网络公共网络，我再次检查并发现..现在一切正常。谢谢。

1 个答案:

答案 0 :(得分：1)

这是一个防火墙问题，请尝试设置每个防火墙，包括您的交换机。

如果解决了这个问题，那就不再是Stack Overflow问题......

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