Description

The article describes how to update the SRX configuration to recognize and permit UDP packets that are larger than 512 bytes.

Symptoms

To update the SRX configuration to recognize and permit UDP packets that are larger than 512 bytes.

Solution

Execute the following command on your firewall specifying the message length.

The minimum message length is 512 bytes & the maximum is 8192 bytes.

root# set security alg dns <maximum-message-length>

default setting is 512 bytes
Possible completions:
<maximum-message-length> Set maximum message length (512..8192 bytes)

Modification History

2019-07-06: Added default setting.