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Joe Harris, CCIE No. 6200 (R&S, Security & SP) is a Systems Engineer with Cisco Systems® specializing in Security. In addition to authoring Cisco Network Security Little Black Book, Joe has also been a technical reviewer for several Cisco Press publications and written articles, white papers, and presentations on various security technologies. He also assists various Certification Partners by beta testing their newest CCIE certification workbooks and has been recognized by Cisco as an SE Wall of Fame award winner.

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Trivia Question - 10/2

October 2nd, 2008 • Related • Filed Under

ETRN (Extended Turn), is an extension to the SMTP mail delivery protocol that allows an SMTP server to request from another SMTP server any e-mail messages it has for a specific domain. Given that background, which of the following configurations below will rate limit the number of ETRN commands the server is allowed to 10 packets per second?

A)
policy-map type inspect esmtp mymap
match cmd verb etrn
rate-limit 10

policy-map global_policy
class inspection_default
inspect esmtp mymap

service-policy global_policy global

B)
policy-map esmtp mymap
match cmd etrn
rate-limit 10

policy-map global_policy
class inspection_default
inspect esmtp mymap

service-policy global_policy global

C)
policy-map type inspect esmtp mymap
match body length gt 32000
drop-connection log

policy-map global_policy
class inspection_default
inspect esmtp mymap

service-policy global_policy global

D)
policy-map type inspect esmtp mymap
match cmd line length gt 512
rate-limit 10

policy-map global_policy
class inspection_default
inspect esmtp mymap

service-policy global_policy global

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