Block all directed IP broadcasts.
Image Drop all packets from the Internet using an RFC 1918 source address or any other internal address.
Image Disable the TCP and UDP small services of echo, chargen, discard, and daytime.
Image Enable a warning banner for all attempted connections to the router, especially to the management interface.
(Stewart 175)
Stewart, J. M. Network Security, Firewalls and VPNs, 2nd Edition. Jones & Bartlett Learning, 07/2013. VitalBook file.
The citation provided is a guideline. Please check each citation for accuracy before use.
https://isc.sans.edu/forums/diary/Cyber+Security+Awareness+Month+Day+24+The+Small+Services/7447/
https://learningnetwork.cisco.com/thread/24113
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