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Home Documentation Junos OS Junos CLI Reference CLI Reference T

Junos CLI Reference

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Junos CLI Reference
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{ "lLangCode": "en", "lName": "English", "lCountryCode": "us", "transcode": "en_US" }
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tcp-non-syn

date_range 20-Nov-23
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Syntax

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tcp-non-syn  {
    drop-flow;
    drop-flow-send-rst;
}

Hierarchy Level

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[edit services service-set service-set-name service-set-options]

Description

Specify how the first non-SYN TCP packet is processed on services PICs. When a services PIC receives the first non-SYN TCP packet for processing, the packet is dropped.

Options

drop-flow

When a services PIC receives the first non-SYN TCP packet for processing, the packet is dropped.

A drop flow created on the services PIC ensures that subsequent non-SYN TCP packets with the same 5-tuple information (source and destination addresses, protocol, and source and destination ports) are dropped. If this statement is not configured, a session is created when a packet hits the services set and matches the stateful firewall rule even if the packet is a non-SYN packet.

drop-flow-send-rst

When a services PIC receives the first non-SYN TCP packet for processing, the packet is dropped and a reset packet is sent to originator to ensure that no further packets are generated.

A drop flow created on the services PIC ensures that subsequent non-SYN TCP packets with the same 5-tuple information (source and destination addresses, protocol, and source and destination ports) are dropped. If this statement is not configured, a session is created when a packet hits the services set and matches the stateful firewall rule even if the packet is a non-SYN packet.

Required Privilege Level

system—To view this statement in the configuration.

system-control—To add this statement to the configuration.

Release Information

Statement introduced in Junos OS Release 16.1R2.

Related Documentation

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