ASA 8.4命令解析

前面发表了一篇文章是ASA 8.0版本的，后面用到8.4发现命令有很多不一样，特发一篇8.4版本的命令可以和前面命令做对比和参考需要注意的是1.这边没有nat 0，也就是说到DMZ区域不需旁路。2.如果是ASA 5505的设备,则需定义vlan端口地址然后把防火墙相应端口加入对应vlan.:ASA Version 8.4(2) //版本8.4!hostname fw enable password 8Ry2YjIyt7RRXU24 encrypted passwd 2KFQnbNIdI.2KYOU encryptednames!interface GigabitEthernet0nameif insidesecurity-level 100ip address 192.168.1.254 255.255.255.0!interface GigabitEthernet1nameif dmzsecurity-level 50ip address 172.16.1.254 255.255.255.0!interface GigabitEthernet2nameif outsidesecurity-level 0ip address 221.222.1.2 255.255.255.0!interface GigabitEthernet3shutdownno nameifno security-levelno ip address!interface GigabitEthernet4shutdownno nameifno security-levelno ip address!interface GigabitEthernet5shutdownno nameifno security-levelno ip address!ftp mode passiveobject network inside //定义nat内部网段subnet 0.0.0.0 0.0.0.0object network outside //定义外网地址host 221.222.1.2object network telnet //定义需发布端口的内部服务器地址host 172.16.1.2object network www host 172.16.1.1object network towww //定义NAT转换的外部内址(此地址做静态NAT)host 221.222.1.3object network totelnethost 221.222.1.4object network natoutsidehost 221.222.1.5access-list outtodmz extended permit tcp any object www eq www //定义需要放行的流量access-list outtodmz extended permit tcp any object www eq telnetaccess-list outtodmz extended permit tcp any object telnet eq telnetaccess-list outtodmz extended permit tcp any object telnet eq wwwpager lines 24mtu dmz 1500mtu outside 1500mtu inside 1500no failovericmp unreachable rate-limit 1 burst-size 1no asdm history enablearp timeout 14400!object network inside //定义动态多对一NATnat (dmz,outside) dynamic interfaceobject network telnet //定义端口转换nat (dmz,outside) static interface service tcp telnet 2023object network www //定义静态一对一NATnat (dmz,outside) static towwwaccess-group outtodmz in interface outside //应用ACL到端口进行流量放行route outside 0.0.0.0 0.0.0.0 221.222.1.1 1 //默认路由timeout xlate 3:00:00timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02timeout sunrpc 0:10:00 h423 0:05:00 h325 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolutetimeout tcp-proxy-reassembly 0:01:00timeout floating-conn 0:00:00dynamic-access-policy-record DfltAccessPolicyuser-identity default-domain LOCALno snmp-server locationno snmp-server contactsnmp-server enable traps snmp authentication linkup linkdown coldstart warmstarttelnet timeout 5ssh timeout 5console timeout 0threat-detection basic-threatthreat-detection statistics access-listno threat-detection statistics tcp-intercept!class-map inspection_defaultmatch default-inspection-traffic!!policy-map type inspect dns preset_dns_mapparameters message-length maximum client auto message-length maximum 512policy-map global_policyclass inspection_default inspect dns preset_dns_map inspect ftp inspect h423 h325 inspect h423 ras inspect ip-options inspect netbios inspect rsh inspect rtsp inspect skinny inspect esmtp inspect sqlnet inspect sunrpc inspect tftp inspect sip inspect xdmcp inspect icmp !service-policy global_policy globalprompt hostname contextno call-home reporting anonymouscall-homeprofile CiscoTAC-1 no active destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService destination address email callhome@cisco.com destination transport-method http subscribe-to-alert-group diagnostic subscribe-to免费云主机域名-alert-group environment subscribe-to-alert-group inventory periodic monthly subscribe-to-alert-group configuration periodic monthly subscribe-to-alert-group telemetry periodic dailycrashinfo save disableCryptochecksum:ceec7cf7a060a0ab5127d816542bb2db: end
ASA QOS限速实例

access-list qos extended permitip host 192.168.1.10 host 192.168.2.10access-list qos extended permitip host 192.168.2.10 host 192.168.1.10class-map qosmatch access-list qospolicy-map qosclass qos police output 10000 police input 10000service-policy qos interfaceinside
注意：如果流量是已经建立的会话,那么数据包不会去找新建立的策略只有在新建立的策略以后新生成的会话,才会撞击这个策略http://www.cisco.com/c/en/us/support/docs/security/asa-5500-x-series-next-generation-firewalls/113396-asa-packet-flow-00.html
8.3以后若有NAT， ACL需匹配源实际IP地址。

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