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otsokume's avatar
otsokume
Icon for Nimbostratus rankNimbostratus
May 12, 2016

F5 ASM with serverevents

Hi friends

 

We have an strange behaviour, perhaps someone of you can help.

 

We have a signalr application behind an F5 ASM. The web loads ok, but when it sends the requested signalr URL . it doesn´t receive any data from the ASM

 

But in the event log we can see the request allowed, with an status code 200. It appears to be correct, but no data is received in the web explorer.

 

Requested URL [HTTPS] /signalr/connect Security Policy XXXXXXXX Support ID 8801861919201072629 Time 2016-05-12 12:45:47 Request Status Legal Request Severity Informational Response Status Code 200 Attack Types N/A Username N/A Session ID 3f747ed211ad5b37

 

Anyone has seen this behaviour before?

 

Regards

 

ASM Advanced WAF
security

1 Reply

  • Yann_Desmarest's avatar
    Yann_Desmarest
    Icon for Cirrus rankCirrus
    May 12, 2016

    Hello,

     

    What happens on the client side. Do you receive a tcp reset ? or a blank html content ? or something else ?

     

    by the way, it's not recommended to log legal requests. Do you have the opportunity to activate Analytics or remote logging ?