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Cisco Bug: CSCus78987 - UDP port 2152 (GPRS) is open by default and can't be manually closed

Last Modified

Jan 29, 2017

Products (1)

  • Cisco ASR 1000 Series Aggregation Services Routers

Known Affected Releases

15.1(2)SY 15.4(1)S

Description (partial)

<B>Symptom:</B>
UDP port 2152 is open by default, without additional configuration.

<B>Conditions:</B>
UDP port 2152 is associated with GPRS Tunneling Protocol. GPRS was introduced on XE3.4S.

http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/sec_data_zbf/configuration/xe-3s/sec-data-zbf-xe-book/conf-gprs-tunn-prot.html#GUID-6153DF03-6228-4117-8E71-
80989510E3A5

By default this port is open even without any GPRS configurations. There is currently no way to
manually close the port or disable the service if its not needed.
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