I have a PCAP file from CICIDS, and what I'd like to know is how can I apply the Snortrule in Windows? I've not written any custom rules myself but want to run the rules already available. For now, the snort.rules file is empty.

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    Your title question does not seem to reflect what you are trying to ask. You did run snort over the pcap, but you got an error because of the file you used. You are in a troubleshooting situation, not a security situation. – schroeder Mar 8 '19 at 8:08

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