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Home Documentation Junos OS Junos CLI Reference CLI Reference A

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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allow-dns-reply

date_range 20-Nov-23
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Syntax

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allow-dns-reply;

Hierarchy Level

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[edit security flow]

Description

Allow an incoming Domain Name Service (DNS) reply packet without a matched request. By default, if an incoming UDP first-packet has dst-port 53, the device checks the DNS message packet header to verify that the query bit (QR) is 0, which denotes a query message. If the QR bit is 1, which denotes a response message, the device drops the packet, does not create a session, and increments the illegal packet flow counter for the interface. Using the allow-dns-reply directs the device to skip the check.

Required Privilege Level

security—To view this in the configuration.

security-control—To add this to the configuration.

Release Information

Statement introduced in Junos OS Release 8.5.

Related Documentation

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