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IMPORTANT
SNS 3.x versions have reached End of Maintenance since July 1st, 2024.
We recommend that you update your SNS firewalls to a version with maintenance to guarantee the protection of your infrastructure.

# ICMP

## “IPS” tab

### Session parameters (in seconds)

Session expiration | This value has to be between 2 and 60 seconds.

### Support

Ignore ICMP notifications (stateful TCP/UDP) | If this option is selected, you will no longer take into account error messages that could arise in the protocols, such as the accessibility of a service or a host, for example.