许多网络设备考虑ICMP流量是良性，对其负载部分不进行检测，因此，攻击者可以将生成的任意信息隐藏在ICMP的有效负载中。

ICMP traffic is often considered to be benign, so network equipment does not check its payload. Therefore, an attacker can hide any generated information in the payload of ICMP.

youdao

许多网络设备考虑ICMP流量是良性，对其负载部分不进行检测，因此，攻击者可以将生成的任意信息隐藏在ICMP的有效负载中。

ICMP traffic is often considered to be benign, so network equipment does not check its payload. Therefore, an attacker can hide any generated information in the payload of ICMP.

youdao