您需要在安全组中打开以下安全端口。每条规则用于不同的目的，如下所示。

所有ICMP用于ping。 HTTP用于访问HTTP端口上的URL。 HTTPS访问安全HTTP端口上的URL。

根据您的要求，您可以更改SOURCE

1.Go to EC2 Dashboard and click "Running Instances" on "Security Groups"
2.select the group of your instance which you need to add security.  
3.click on the "Inbound" tab
4.Click "Edit" Button (It will open an popup window)
5.click "Add Rule"
6.Select the "Custom ICMP rule - IPv4" as Type
7.Enter the "0.0.0.0/0" as Source or your public IP

7.点击“保存”

安全组中的自定义ICMP规则不是它所需要的，至少对我来说是这样。 但下面的规则是可行的:

Type: All ICMP 
Protocol: TCP
Port range: 0 - 65535
Source: Anywhere - 0.0.0.0/0

完成此操作后，您将能够ping其他实例。你会看到如下内容:

PING 10.0.0.15 (10.0.0.15): 56 data bytes
64 bytes from 10.0.0.14: icmp_seq=1 ttl=64 time=3.9 ms
64 bytes from 10.0.0.14: icmp_seq=2 ttl=64 time=3.9 ms
64 bytes from 10.0.0.14: icmp_seq=3 ttl=64 time=10.6 ms
64 bytes from 10.0.0.14: icmp_seq=4 ttl=64 time=40.6 ms
64 bytes from 10.0.0.14: icmp_seq=5 ttl=64 time=3.8 ms
64 bytes from 10.0.0.14: icmp_seq=6 ttl=64 time=5.3 ms
64 bytes from 10.0.0.14: icmp_seq=7 ttl=64 time=6.5 ms
64 bytes from 10.0.0.14: icmp_seq=8 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=9 ttl=64 time=21.0 ms
64 bytes from 10.0.0.14: icmp_seq=10 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=11 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=12 ttl=64 time=59.7 ms
64 bytes from 10.0.0.14: icmp_seq=13 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=14 ttl=64 time=3.5 ms
64 bytes from 10.0.0.14: icmp_seq=15 ttl=64 time=4.8 ms
64 bytes from 10.0.0.14: icmp_seq=16 ttl=64 time=3.1 ms
64 bytes from 10.0.0.14: icmp_seq=17 ttl=64 time=3.1 ms
64 bytes from 10.0.0.14: icmp_seq=18 ttl=64 time=3.0 ms
64 bytes from 10.0.0.14: icmp_seq=19 ttl=64 time=3.1 ms

--- 10.0.0.14 ping statistics ---
20 packets transmitted, 19 packets received, 5% packet loss
round-trip min/avg/max = 3.0/9.9/59.7 ms

´s。

用所有ICMP创建一个新的安全组对我很有用。

我尝试了以上步骤中的多种解决方案，但对我有效的是

更改互联网连接到我的移动热点

再试一次。我家的网络设置不允许我连接到RDP。我在哪里可以SSH到linux服务器

检查你的安全组

2-check Internet网关

3-检查路由表