Combination Custom IPS Signature

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Combination Custom IPS Signature

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Hello all.

quick question as to combination customer signature.

would you please give me your advise please?

- one of potential customer want their employee to forcely use company email server (when sending..) not thru the hotmail, gmail etc..

- I found that one of web email service change their URL when  it's time to 'write' the email content.


in the custom IPS signature .

1. event name : mail1_send
http-req-uri-path : hanmailex/Top.daum

action : alert

2. event name : mail2_send

http-req-uri-params : cmd_ComposeMail

action : alert

3. event name : daum_bocking.

in event 3. I chose the 'combination'  and add upper 2 signature(mail1_send, mail2_send) in a row.

action : block.

will this work as my intention?(I failed.. firstly).. e.g) after alerting mail1_send, daum_blocking is populated on the fly, so just accessing that page also denied..

my intention is combined matching event daum_blocking was supposed to generated right after mail1_send and mail2_send event popped up..

I really apprecaite for this in advaces..

thank you very much.


L4 Transporter

Your logic is correct in that you should be able to create individual custom signatures and use the combination signature to combine the 2 events together with an and operator. I can't comment whether or not your signatures are good enough to match the event that you want though. Did you also check/uncheck the ordered match criteria to enforce the order in which the signatures are triggered or not?

yes I tried that.

would you please review the test procedure?

thank you very much.

  • 2 replies
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