Assertion: great firewall | /r/CapableOf | detect the activity
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Source sentences:
text: For example, shortly after a VPN request is issued by a legitimate Chinese VPN client and passes outbound though the Great Firewall to a hidden VPN IP, the Great Firewall may detect the activity and issue its own active probe to verify the nature of the previously-unknown VPN IP and, if the probe confirms the IP is part of a blacklisted VPN, blacklist the IP.
text: For example, shortly after a VPN request is issued by a legitimate Chinese VPN client and passes outbound though the Great Firewall to a hidden VPN IP, the Great Firewall may detect the activity and issue its own active probe to verify the nature of the previously-unknown VPN IP and, if the probe confirms the IP is part of a blacklisted VPN, blacklist the IP.