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UDS Regular Expression

Good Morning. I am currently defining a UDS rule to try to identify a specific type of traffic. The problem is that, despite the fact that the regex used matches correctly at regex101, the IPS is not detecting traffic with tests we are doing.

I think that some kind of definition is missing to be valid by the IPS, but I don't know. Can you help me?

Thanks in advance 😉

I have the next condition:

http-post-req-message-body matches "^[A-Za-z0-9]+[=].+" ( case-insensitive )

and I want to detect this traffic:





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Former Member
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Re: UDS Regular Expression

NSP uses a limited implementation of SNORT, so a lot of "correct" rules won't work. Do you get an error when you import the rule to NSM? 


Make sure you have the rule applied to the correct interfaces, also.

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