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无法访问本地网络中的 Linux 服务器

tag-icon • tag-icon networking router ip routing home-networking
无法访问本地网络中的 Linux 服务器

问题：更换新路由器（TP-Link AX11000）后无法从 Windows PC 访问 Linux Mint 20.1 PC

路由器：TP-Link AX11000

机器 1：Windows 10 电脑

机器2：Linux Mint 20.1 电脑

我能够从 Windows 10 PC 通过 winscp / nomachine / ssh 连接到 Linux Mint 20.1 PC，直到我更换了新路由器，并且为每个设备分配了新 IP。我不确定问题是否是由于：

  1. ax11000 阻止连接
  2. 由于新 IP，PC 配置过时
  3. Linux Mint 20.1 的防火墙（我禁用了防火墙，sudo ufw disable并尝试使用下面提到的方法连接，但没有成功。所以我不认为防火墙是问题所在）
  4. 其他东西

WinSCP 错误：

Network error: Connection to "192.168.0.231" timed out

NoMachine 错误：

A connection timeout has occurred while trying to connect to '192.168.0.231' on port '4000'. The issue could either be caused by a networking problem, by a firewall or NAT blocking incoming traffic or by a wrong server address. Please verify your configuration and try again.
  • UPnP（通用即插即用）已启用，并且存在由NoMachine创建的端口4000。

SSH 错误：

# standard ssh to my linux mint don't work as expected
$ ssh -v [email protected]
OpenSSH_8.2p1 Ubuntu-4ubuntu0.1, OpenSSL 1.1.1f  31 Mar 2020
debug1: Reading configuration data /home/USER/.ssh/config
debug1: Reading configuration data /etc/ssh/ssh_config
debug1: /etc/ssh/ssh_config line 19: include /etc/ssh/ssh_config.d/*.conf matched no files
debug1: /etc/ssh/ssh_config line 21: Applying options for *
debug1: Connecting to 192.168.0.231 [192.168.0.231] port 22.
debug1: connect to address 192.168.0.231 port 22: No route to host
ssh: connect to host 192.168.0.231 port 22: No route to host

# ping the IP address to ensure linux mint pc is up (it's because I am looking at the mint pc), from my Windows to my Linux
ping 192.168.0.231
PING 192.168.0.231 (192.168.0.231) 56(84) bytes of data.
From 192.168.0.194 icmp_seq=7 Destination Host Unreachable
From 192.168.0.194 icmp_seq=10 Destination Host Unreachable
From 192.168.0.194 icmp_seq=13 Destination Host Unreachable
From 192.168.0.194 icmp_seq=16 Destination Host Unreachable
From 192.168.0.194 icmp_seq=19 Destination Host Unreachable
From 192.168.0.194 icmp_seq=22 Destination Host Unreachable
From 192.168.0.194 icmp_seq=25 Destination Host Unreachable
^C
--- 192.168.0.231 ping statistics ---
25 packets transmitted, 0 received, +7 errors, 100% packet loss, time 24778ms

IP信息：

$ sudo netstat -anutp | grep :22
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      64417/sshd: /usr/sb 
tcp6       0      0 :::22                   :::*                    LISTEN      64417/sshd: /usr/sb

$ ip addr
...
    inet 192.168.0.231/24 brd 192.168.0.255 scope global dynamic noprefixroute wlp59s0
...

$ hostname -I
192.168.0.231

$ ip r
192.168.0.0/24 dev wlp59s0 proto kernel scope link src 192.168.0.231 metric 600

我如何设置路由器：https://www.tp-link.com/us/user-guides/archer-ax11000_v1/chapter-4-set-up-internet-connection#ug-sub-title-1

AX11000 系统诊断输出：

# Windows 10 PC ping
PING 192.168.0.194 (192.168.0.194): 64 data bytes
Reply from 192.168.0.194: bytes=64 ttl=128 seq=1 time=1.632 ms
Reply from 192.168.0.194: bytes=64 ttl=128 seq=2 time=1.620 ms
Reply from 192.168.0.194: bytes=64 ttl=128 seq=3 time=1.327 ms
Reply from 192.168.0.194: bytes=64 ttl=128 seq=4 time=1.722 ms
--- Ping Statistic "192.168.0.194" ---
Packets: Sent=4, Received=4, Lost=0 (0.00% loss)
Round-trip min/avg/max = 1.327/1.575/1.722 ms
ping is stopped. 

# Windows 10 PC traceroute
traceroute to 192.168.0.194, 5 hops max, 38 byte packets
1 * * *
2 * * *
3 * * *
4 * * *
5 * * *
Trace Complete.
traceroute is stopped. 

# Linux Mint 20.1 PC ping
PING 192.168.0.231 (192.168.0.231): 64 data bytes
Reply from 192.168.0.231: bytes=64 ttl=64 seq=1 time=7.350 ms
Reply from 192.168.0.231: bytes=64 ttl=64 seq=2 time=1.145 ms
Reply from 192.168.0.231: bytes=64 ttl=64 seq=3 time=1.307 ms
Reply from 192.168.0.231: bytes=64 ttl=64 seq=4 time=2.178 ms
--- Ping Statistic "192.168.0.231" ---
Packets: Sent=4, Received=4, Lost=0 (0.00% loss)
Round-trip min/avg/max = 1.145/2.995/7.350 ms
ping is stopped. 

# Linux Mint 20.1 PC traceroute
traceroute to 192.168.0.231, 5 hops max, 38 byte packets
1 192.168.0.231 (192.168.0.231) 35.597 ms 35.319 ms 1.242 ms
Trace Complete.
traceroute is stopped.

任何回应/指示/帮助都将不胜感激！

答案1

这很尴尬，但重新启动路由器后问题就消失了，我发誓我这样做了，并确认它不起作用，然后我才在这里发布问题。

我联系了 TP-Link 支持人员，与他们一起解决问题。如果您使用 TP-Link AX11000 并遇到同样的问题，请注意以下设置

高级 > 无线 > 无线设置

  • 安全性：WPA/WPA2-个人
  • 版本：WPA-PSK/WPA2-PSK
  • 加密：AES

高级 > 无线 > 附加设置

  • 确保AP Isolation​已禁用

高级 > 系统 > 固件升级

  • 确保固件是最新的

确保这些设置正确后，关闭路由器，等待 5 分钟，然后重新启动。现在应该可以正常工作了，祈祷吧。

另外，特别感谢用户@Zina 的帮助。

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