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Assessment Title
Rule Text
The IAO will ensure that 802.1x is implemented using a secure EAP such as EAP-TLS, EAP-TTLS or PEAP.
Description
Discussion Text
EAP methods/types are continually being proposed, however, the three being considered secure are
EAP-TLS, EAP-TTLS, and PEAP.
PEAP is the preferred EAP type to be used in DoD because of its ability to support a greater number of operating systems and its capability to transmit statement of health information, per NSA NAC study.
Lightweight EAP (LEAP) is a CISCO proprietary protocol providing an easy-to-deploy one password authentication. LEAP is vulnerable to dictionary attacks. A "man in the middle" can capture traffic, identify a password, and then use it to access a WLAN. LEAP is inappropriate and does not provide sufficient security for use on DOD networks.
EAP-MD5 is functionally similar to CHAP and is susceptible to eavesdropping because the password credentials are sent as a hash (not encrypted). In addition, server administrators would be required to store unencrypted passwords on their servers violating other security policies. EAP-MD5 is inappropriate and does not provide sufficient security for use on DOD networks.
EAP-TLS, EAP-TTLS, and PEAP.
PEAP is the preferred EAP type to be used in DoD because of its ability to support a greater number of operating systems and its capability to transmit statement of health information, per NSA NAC study.
Lightweight EAP (LEAP) is a CISCO proprietary protocol providing an easy-to-deploy one password authentication. LEAP is vulnerable to dictionary attacks. A "man in the middle" can capture traffic, identify a password, and then use it to access a WLAN. LEAP is inappropriate and does not provide sufficient security for use on DOD networks.
EAP-MD5 is functionally similar to CHAP and is susceptible to eavesdropping because the password credentials are sent as a hash (not encrypted). In addition, server administrators would be required to store unencrypted passwords on their servers violating other security policies. EAP-MD5 is inappropriate and does not provide sufficient security for use on DOD networks.
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