> Source: [sk112772](https://support.checkpoint.com/results/sk/sk112772)

# sk112772 - ICMP redirects drop

| Property | Value |
|----------|-------|
| Solution ID | sk112772 |
| Date Created | 2016-08-24 |
| Last Modified | 2023-06-30 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R81.20, R81.10 (EOS), R81 (EOS) |

## Symptoms

- * Internet Control Message Protocol (ICMP) is used to communicate to the original source, the `ICMP Redirect packets` drops encountered while routing the packets, and exercise control on the traffic.
* SmartConsole Logs for dropped ICMP traffic with reason: "ICMP redirect packets are not allowed"

## Cause

ICMP redirect messages are used by routers to notify the hosts on the data link that a better route is available for a particular destination. ICMP redirect packets are not allowed by default (refer to [sk22180](http://supportcontent.checkpoint.com/solutions?id=sk22180)).

## Solution

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