我试图找出为什么我可以通过 SSH 连接的远程主机无法连接到互联网。
当我尝试 ping 所述服务器时，它将以 1 ping 进行回应，并且不会收到所有后续数据包。
$ ping 138.68.93.123
PING 138.68.93.123 (138.68.93.123) 56(84) bytes of data.
64 bytes from 138.68.93.123: icmp_seq=1 ttl=52 time=7.44 ms
^C
--- 138.68.93.123 ping statistics ---
9 packets transmitted, 1 received, 88.8889% packet loss, time 8155ms
rtt min/avg/max/mdev = 7.436/7.436/7.436/0.000 ms
以下是traceroute 8.8.8.8远程主机的内容
$ traceroute 8.8.8.8
traceroute to 8.8.8.8 (8.8.8.8), 30 hops max, 60 byte packets
1 * * *
2 * * *
3 * * *
4 * * *
5 * * *
6 * * *
7 * * *
8 * * *
9 * * *
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *
route -n输出如下：
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
0.0.0.0 138.68.80.1 0.0.0.0 UG 0 0 0 eth0
10.19.0.0 0.0.0.0 255.255.0.0 U 0 0 0 eth0
10.114.0.0 0.0.0.0 255.255.240.0 U 0 0 0 eth1
138.68.80.0 0.0.0.0 255.255.240.0 U 0 0 0 eth0
iptables -l -V输出如下：
$ sudo iptables -L -v
Chain INPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain FORWARD (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
Chain OUTPUT (policy ACCEPT 0 packets, 0 bytes)
pkts bytes target prot opt in out source destination
以下是到该远程主机的跟踪路由
traceroute to 138.68.93.123 (138.68.93.123), 30 hops max, 60 byte packets
1 _gateway (10.0.88.1) 0.177 ms 0.214 ms 0.317 ms
2 gw-tesag-eth.cyberlink.ch (62.12.154.121) 1.228 ms 1.398 ms 1.242 ms
3 glbix-pe2.cyberlink.ch (195.144.164.2) 2.174 ms 2.262 ms 2.117 ms
4 cybl-ch-zrh-pcr-001.cyberlink.ch (213.158.128.141) 2.193 ms 2.331 ms 2.224 ms
5 zhtix1-br2.cyberlink.ch (213.158.128.140) 8.799 ms 8.880 ms 8.818 ms
6 zhtix1-br2.cyberlink.ch (213.158.128.73) 9.270 ms 4.592 ms 1.620 ms
7 31.217.132.145 (31.217.132.145) 9.236 ms 9.257 ms 9.285 ms
8 fra1-edge1.digitalocean.com (80.81.193.141) 7.507 ms 7.796 ms 7.843 ms
9 * * *
10 * * *
11 * * *
12 138.68.93.123 (138.68.93.123) 8.299 ms 8.133 ms 7.950 ms
连接接口
$ ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether ce:10:68:f7:c3:bf brd ff:ff:ff:ff:ff:ff
inet 138.68.93.123/20 brd 138.68.95.255 scope global eth0
valid_lft forever preferred_lft forever
inet 10.19.0.65/16 brd 10.19.255.255 scope global eth0:1
valid_lft forever preferred_lft forever
inet6 fe80::cc10:68ff:fef7:c3bf/64 scope link
valid_lft forever preferred_lft forever
3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP group default qlen 1000
link/ether ae:29:c0:9f:a0:76 brd ff:ff:ff:ff:ff:ff
inet 10.114.0.58/20 brd 10.114.15.255 scope global eth1
valid_lft forever preferred_lft forever
inet6 fe80::ac29:c0ff:fe9f:a076/64 scope link
valid_lft forever preferred_lft forever
还有其他工具可以用来诊断这个问题吗？