tailieunhanh - cisco press router security strategies phần 10

và đèn kiểm tra) là thường xuyên nhất được sử dụng để vượt qua bức tường lửa đơn giản và trong kỹ thuật dấu vân tay hệ điều hành. Bất kỳ gói tin sử dụng những lá cờ URG hoặc PSH luôn luôn có thể mang dữ liệu. WinNuke là một cuộc tấn công chống lại một hệ thống Windows gây ra một ). | 582 Appendix C Cisco IOS to IOS XR Security Transition Table C-3 Management Plane Security Commands Continued IOS IOS XR Syslog Support Logging Commands Logging Commands logging Configure various syslog attributes. config logging config logging facility local config logging buffered debug config logging buffered 64000 config no logging console config logging source-interface Loopback0 logging Configure various syslog attributes. config logging buffered 2000000 config logging buffered debug config logging config logging facility local config logging source-interface Loopback0 config logging trap debugging config logging hostname prefix ThisRouter config logging history warning config logging history size 2 config logging console disable bgp log-neighbor-changes Enable logging of BGP neighbor status changes up or down and resets. config router bgp 65001 config-router bgp log-neighbor- changes bgp log neighbor changes Enable logging of BGP neighbor status changes up or down and resets. config router bgp 65001 config-bgp no bgp log neighbor changes disable Note that the default is to log BGP neighbor changes. If logging is disabled it may be reenabled as shown here. log-adjacency-changes Enable logging of IS-IS adjacency change events and other non-IIH events. config router is-is Core config-router log-adjacency- changes log adjacency changes Configure the generation of a log message when an IS-IS adjacency states change up or down . config router is-is Core config-is-is log adjacency changes Logging Correlator Commands No directly comparable command exists in IOS . logging correlator Configure various logging correlation rules. config logging events threshold 10 config logging events buffer-size 10000 config logging events level errors config logging correlator rule alarm1 timeout 600000 pKt_INFRA LINK UPDOWN L2 SONET ALARM config logging correlator apply-rule alarm1 location all-of-router Management Plane Security Commands 583 Table C-3 .