我已经pptpd在我的 vultr ubuntu 服务器中设置了我自己的服务器，我使用 Windows 中内置的客户端连接它，我成功访问了互联网，当我检查我的 ip 时，我看到的是 vps ip 而不是我的真实 ip，但是我的问题是当我尝试使用名为的简单工具在我的 Windows 客户端中打开端口 portlistener并开始监听端口 80 时，我使用了 checkport 工具，但我看到端口 80 已关闭。那么有谁知道如何在我的客户端使用这个端口？
我的ifconfig命令显示：
root@vultr:~# ifconfig
ens3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 104.238.191.125 netmask 255.255.254.0 broadcast 104.238.191.255
inet6 fe80::5400:2ff:feec:61e8 prefixlen 64 scopeid 0x20<link>
ether 56:00:02:ec:61:e8 txqueuelen 1000 (Ethernet)
RX packets 3383 bytes 984017 (960.9 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 3470 bytes 897643 (876.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ens7: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1450
inet 10.24.96.3 netmask 255.255.0.0 broadcast 10.24.255.255
inet6 fe80::5800:2ff:feec:61e8 prefixlen 64 scopeid 0x20<link>
ether 5a:00:02:ec:61:e8 txqueuelen 1000 (Ethernet)
RX packets 3 bytes 370 (370.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 225 bytes 9910 (9.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536
inet 127.0.0.1 netmask 255.0.0.0
inet6 ::1 prefixlen 128 scopeid 0x10<host>
loop txqueuelen 1000 (Local Loopback)
RX packets 0 bytes 0 (0.0 B)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 0 bytes 0 (0.0 B)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
ppp0: flags=4305<UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> mtu 1396
inet 10.24.96.3 netmask 255.255.255.255 destination 10.24.96.5
ppp txqueuelen 3 (Point-to-Point Protocol)
RX packets 340 bytes 45323 (44.2 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 183 bytes 47486 (46.3 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
iptables -L命令显示：
root@vultr:~# iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
ACCEPT gre -- anywhere anywhere
ACCEPT tcp -- anywhere anywhere tcp dpt:1723 state NEW
Chain FORWARD (policy ACCEPT)
target prot opt source destination
TCPMSS tcp -- 10.0.0.0/24 anywhere tcp flags:SYN,RST/SYN TCPMSS clamp to PMTU
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
