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Hide IP address

Hide IP address

Created: Feb 28, 2021 13:37:09Latest reply: Feb 28, 2021 13:39:25 419 1 0 0 0
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Hi all,

I want to hide the IP address of our router AR1200. Is there any method to prevent the IP address of the router from being obtained by tracert?

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Popeye_Wang
Admin Created Feb 28, 2021 13:39:25

Hello,

By default, an interface replies with an ICMP Time Exceeded message after it receives a message with TTL 1. The interface adds its IP address as the source IP address in the ICMP Time Exceeded message, exposing the interface itself to attackers. In addition, after being attacked, the interface replies with numerous ICMP Time Exceeded messages, consuming CPU resources and degrading system performance. To resolve these problems, run the undo icmp ttl-exceeded send command to disable the interface from replying with ICMP Time Exceeded messages.

Example

# Disable GE1/0/0 from sending ICMP Time Exceeded messages.

<Huawei> system-view

[Huawei] interface gigabitethernet 1/0/0

[Huawei-GigabitEthernet1/0/0] undo icmp ttl-exceeded send


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Popeye_Wang
Popeye_Wang Admin Created Feb 28, 2021 13:39:25

Hello,

By default, an interface replies with an ICMP Time Exceeded message after it receives a message with TTL 1. The interface adds its IP address as the source IP address in the ICMP Time Exceeded message, exposing the interface itself to attackers. In addition, after being attacked, the interface replies with numerous ICMP Time Exceeded messages, consuming CPU resources and degrading system performance. To resolve these problems, run the undo icmp ttl-exceeded send command to disable the interface from replying with ICMP Time Exceeded messages.

Example

# Disable GE1/0/0 from sending ICMP Time Exceeded messages.

<Huawei> system-view

[Huawei] interface gigabitethernet 1/0/0

[Huawei-GigabitEthernet1/0/0] undo icmp ttl-exceeded send


View more
  • x
  • convention：
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