""ET VOIP Possible Inbound VOIP Scan/Misuse With User-Agent Zoiper""

SID: 2012297

Revision: 1

Class Type: attempted-recon

Metadata: created_at 2011_02_07, updated_at 2011_02_07

Reference:

• Link

Protocol: udp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HOME_NET

Destination Port: 5060

Flow:

Contents:

• Value: "|0d 0a|User-Agent|3A| Zoiper"

Within:

PCRE:

Special Options:

• nocase

source