我有 2 台 PC 通过交换机连接。PC1--
<-->--交换机--<-->--PC2
两台电脑都装有 Windows 7。
两台电脑都可以相互连接和共享文件。
两台电脑都可以通过远程桌面连接。
两台电脑上的防火墙都已禁用。
但我无法从 PC1 连接到 PC2 上的端口 80 上的 Web 服务器。PC2 的
代理服务器在端口 8888 上运行。
我可以通过 PC1 上的套接字连接到端口 8888，但无法连接到端口 80。连接超时...
可能存在什么问题以及如何解决？
编辑：PC2 的 NETSTAT 输出（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 0.0.0.0:809 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 0.0.0.0:990 0.0.0.0:0 LISTENING
WcesComm
[svchost.exe]
TCP 0.0.0.0:1025 0.0.0.0:0 LISTENING
[wininit.exe]
TCP 0.0.0.0:1026 0.0.0.0:0 LISTENING
eventlog
[svchost.exe]
TCP 0.0.0.0:1027 0.0.0.0:0 LISTENING
Schedule
[svchost.exe]
TCP 0.0.0.0:1029 0.0.0.0:0 LISTENING
[lsass.exe]
TCP 0.0.0.0:1037 0.0.0.0:0 LISTENING
[services.exe]
TCP 0.0.0.0:2383 0.0.0.0:0 LISTENING
[msmdsrv.exe]
TCP 0.0.0.0:2869 0.0.0.0:0 LISTENING
Can not obtain ownership information
TCP 0.0.0.0:3389 0.0.0.0:0 LISTENING
CryptSvc
[svchost.exe]
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 127.0.0.1:21 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:23 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:25 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:110 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:143 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:554 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:808 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:1080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:1434 0.0.0.0:0 LISTENING
[sqlservr.exe]
TCP 127.0.0.1:2080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:5679 0.0.0.0:0 LISTENING
WcesComm
[svchost.exe]
TCP 127.0.0.1:7000 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:7438 0.0.0.0:0 LISTENING
WcesComm
[svchost.exe]
TCP 127.0.0.1:8010 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:8080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 127.0.0.1:8110 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:21 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:23 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:25 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:110 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:139 0.0.0.0:0 LISTENING
Can not obtain ownership information
TCP 192.168.2.3:143 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:554 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:1080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:2080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:7000 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:8010 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:8080 0.0.0.0:0 LISTENING
[WinGate.exe]
TCP 192.168.2.3:8110 0.0.0.0:0 LISTENING
[WinGate.exe]
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 [::]:990 [::]:0 LISTENING
WcesComm
[svchost.exe]
TCP [::]:1025 [::]:0 LISTENING
[wininit.exe]
TCP [::]:1026 [::]:0 LISTENING
eventlog
[svchost.exe]
TCP [::]:1027 [::]:0 LISTENING
Schedule
[svchost.exe]
TCP [::]:1029 [::]:0 LISTENING
[lsass.exe]
TCP [::]:1037 [::]:0 LISTENING
[services.exe]
TCP [::]:2383 [::]:0 LISTENING
[msmdsrv.exe]
TCP [::]:2869 [::]:0 LISTENING
Can not obtain ownership information
TCP [::]:3389 [::]:0 LISTENING
CryptSvc
[svchost.exe]
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 [::1]:1434 [::]:0 LISTENING
[sqlservr.exe]
TCP [::1]:5679 [::]:0 LISTENING
WcesComm
[svchost.exe]
TCP [fe80::adb8:8865:e549:ec5d%23]:445 [fe80::c79:b496:f8cc:7d1b%23]:1121 ESTABLISHED
Can not obtain ownership information
TCP [fe80::adb8:8865:e549:ec5d%23]:1034 [fe80::c79:b496:f8cc:7d1b%23]:1029 ESTABLISHED
[spoolsv.exe]
TCP [fe80::adb8:8865:e549:ec5d%23]:1051 [fe80::c79:b496:f8cc:7d1b%23]:3587 ESTABLISHED
p2pimsvc
[svchost.exe]
TCP [fe80::adb8:8865:e549:ec5d%23]:1054 [fe80::c79:b496:f8cc:7d1b%23]:3587 TIME_WAIT
UDP 0.0.0.0:123 *:*
W32Time
[svchost.exe]
UDP 0.0.0.0:500 *:*
IKEEXT
[svchost.exe]
UDP 0.0.0.0:520 *:*
[WinGate.exe]
UDP 0.0.0.0:3544 *:*
iphlpsvc
[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 *:*
EventSystem
[svchost.exe]
UDP 0.0.0.0:3702 *:*
FDResPub
[svchost.exe]
UDP 0.0.0.0:4500 *:*
IKEEXT
[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 0.0.0.0:51148 *:*
[WinGate.exe]
UDP 0.0.0.0:55535 *:*
[WinGate.exe]
UDP 0.0.0.0:55834 *:*
FDResPub
[svchost.exe]
UDP 0.0.0.0:55836 *:*
EventSystem
[svchost.exe]
UDP 0.0.0.0:55838 *:*
EventSystem
[svchost.exe]
UDP 0.0.0.0:59370 *:*
[WinGate.exe]
UDP 0.0.0.0:65467 *:*
[WinGate.exe]
UDP 0.0.0.0:65468 *:*
[WinGate.exe]
UDP 127.0.0.1:53 *:*
[WinGate.exe]
UDP 127.0.0.1:368 *:*
[WinGate.exe]
UDP 127.0.0.1:1900 *:*
SSDPSRV
[svchost.exe]
UDP 127.0.0.1:8000 *:*
[WinGate.exe]
UDP 127.0.0.1:55627 *:*
SSDPSRV
[svchost.exe]
UDP 192.168.2.3:53 *:*
[WinGate.exe]
UDP 192.168.2.3:67 *:*
[WinGate.exe]
UDP 192.168.2.3:137 *:*
Can not obtain ownership information
UDP 192.168.2.3:138 *:*
Can not obtain ownership information
UDP 192.168.2.3:368 *:*
[WinGate.exe]
UDP 192.168.2.3:1900 *:*
SSDPSRV
[svchost.exe]
UDP 192.168.2.3:8000 *:*
[WinGate.exe]
UDP 192.168.2.3:51174 *:*
iphlpsvc
[svchost.exe]
UDP 192.168.2.3:55626 *:*
SSDPSRV
[svchost.exe]
UDP [::]:123 *:*
W32Time
[svchost.exe]
UDP [::]:500 *:*
IKEEXT
[svchost.exe]
UDP [::]:3540 *:*
p2pimsvc
[svchost.exe]
UDP [::]:3702 *:*
EventSystem
[svchost.exe]
UDP [::]:3702 *:*
FDResPub
[svchost.exe]
UDP [::]:3702 *:*
FDResPub
[svchost.exe]
UDP [::]:3702 *:*
EventSystem
[svchost.exe]
UDP [::]:4500 *:*
IKEEXT
[svchost.exe]
UDP [::]:5004 *:*
[wmpnetwk.exe]
UDP [::]:5005 *:*
[wmpnetwk.exe]
UDP [::]:5355 *:*
Dnscache
[svchost.exe]
UDP [::]:55835 *:*
FDResPub
[svchost.exe]
UDP [::]:55837 *:*
EventSystem
[svchost.exe]
UDP [::]:55839 *:*
EventSystem
[svchost.exe]
UDP [::1]:1900 *:*
SSDPSRV
[svchost.exe]
UDP [::1]:55625 *:*
SSDPSRV
[svchost.exe]
UDP [fe80::adb8:8865:e549:ec5d%23]:546 *:*
Dhcp
[svchost.exe]
UDP [fe80::adb8:8865:e549:ec5d%23]:1900 *:*
SSDPSRV
[svchost.exe]
UDP [fe80::adb8:8865:e549:ec5d%23]:55624 *:*
SSDPSRV
[svchost.exe]