TIL: You can use traceoptions to watch a specific session get denied.

Just started working with SRX firewalls and was troubleshooting a connectivity issue. I knew the packet was being denied, but couldn't pinpoint the exact rule.

A senior engineer showed me how to use `traceoptions` to follow a single session. You can filter by source, destination, and even the exact port. It logs every step the packet takes through the policies. Found the offending security policy in minutes.

This seems way more targeted than just looking at the general firewall log. Is this the standard method you all use for debugging specific denials? Are there any downsides to leaving traceoptions running for a short time on a production box?