> Source: [sk111881](https://support.checkpoint.com/results/sk/sk111881)

# sk111881 - Rate Limiting rules for DoS Mitigation are not taking effect

| Property | Value |
|----------|-------|
| Solution ID | sk111881 |
| Date Created | 2016-06-14 |
| Last Modified | 2018-12-04 |
| Technical Level | Advanced |
| Products | Security Gateway |
| Versions | R82.10, R82, R81.20 |
| OS | Gaia |

## Symptoms

- * Rate Limiting rules for DoS Mitigation ("fw samp" per [sk112454](https://supportcenter.checkpoint.com/supportcenter/portal?eventSubmit_doGoviewsolutiondetails=&solutionid=sk112454)) are not enforced correctly. Connections are still going through beyond the configured threshold.

* Output of `fw samp get -l | grep '^<[0-9a-f,]*>$' | xargs sim_dos get` command shows that there are active Rate Limiting rules.

  Note: in R80.20, the command is `fw samp get -l | grep '^<[0-9a-f,]*>$' | xargs fwaccel dos rate get`
* Output of *fw tab -t connections -u \| grep RELEVANT_SOURCE_IP \| grep (port 443)* command shows that there are more than 2 connections for the particular pair of hosts.

* Connections are originating from the Internal side of the Security Gateway, or the topology is defined so that the connections are Internal-to-External or Internal-to-Internal.

## Cause

By default, Rate Limiting rules for DoS Mitigation are defined to prevent External-to-Internal traffic. These rules will not enforce Internal-to-External or Internal-to-Internal connections.

## Solution

This solution requires authentication. Please log in to view the full solution.

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