진주성 블로그 방문하기
진주성 블로그 방문하기
보안 route access-list
2017.10.30 23:05
route access-list
Ingress Filtering
Engress Filtering
Watch Mode
Intercept Mode
- 라우터 사용모드
User EXEC 모드 Privileged EXEC 모드 Global Configuration 모드 Other Configuration 모드
- password 설정
Router> enable Router# configure terminal Router(config)# enable password XXXXX # 평문 저장 Router(config)# enable secret XXXXX # 암호화 저장 Router(config)# Router(config)# ^Z Router#
- ACL 설정
Router> enable Router# configure terminal Router(config)# no access-list 5 # 5번 삭제 Router(config)# access-list 5 permit host 192.168.1.2 Router(config)# access-list 5 permit host 192.168.1.3 Router(config)# access-list 5 deny any Router(config)# ^Z Router# sh access-list 5 # 5번 확인 Standard IP access list 5 permit 192.168.1.2 permit 192.168.1.2 deny any Router#
- 211.1.1.0/24 대역사용할때
Land Attack 차단 access-list 101 deny ip 211.1.1.0 0.0.0.255 any
ip access-group access-lister-number { in|out}
%% access-list access-list-number { permit | deny } protocol source source-wildcard [port] destination destination-wildcard [port] [ established] [log]
Ingress Filtering access-list 101 deny ip host 0.0.0.0 any
Egress Filtering interface x/y ip access-group 110 out access-list 110 permit ip 211.1.1.0 0.0.0.255 any access-list 110 permit ip 211.1.2.0 0.0.0.255 any access-list 110. deny ip any any
- Null 라우팅 설정
interface Null0 no ip unreachables ip route 211.1.1.0 0.0.0.255 Null0
- Buffered Logging 설정
logging on logging buffered 16000 debugging service timestamp log date msec local show-timezone
- snmp access-list 설정
no access-list 20 access-list 20 permit host 192.168.x.x access-list 20 deny any snmp-server community public ro 20
- Unicast RPF
>enable
#conf t
(config) # interface FastEthernet 0/0
(config-if) # ip verify unicast reverse-path
(config-if) # end
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