Synopsis
The remote ICCP server has just sent an ACSE Abort Message in response to an invalid Presentation Layer Selector (PSEL) value.
Description
The remote ICCP server has just sent an ACSE Abort Message in response to an invalid Presentation Layer Selector (PSEL) value. As PSEL values are typically only 2 to 4 bytes long, this could indicate that a client is 'brute-forcing' a valid PSEL value. This sort of attack can also impact Availability to the server.
