ASA配置案例
拓扑
基本要求：
1. Hosts on the Inside network can access any network host on any network for FTP and DNS services.
2. Sales Department hosts on the Inside network can access any network host on any network for WWW services.
3. Finance Department hosts can only access WWW services on the WWW server in their own DMZ.
4. All hosts on the Inside network are permitted to Ping hosts on any network.
5. Hosts on the Inside network are only permitted to respond to ICMP echo requests from hosts on the DMZ network.
6. Unless otherwise stated, only specified traffic is permitted to leave the Inside network.
7. Only hosts on the Inside network are permitted to access FTP services on the DMZ FTP server.
8. All hosts are permitted to access WWW services on the DMZ WWW server.
9. Hosts in the DMZ are only permitted to communicate for their designated purpose. (E.g. The WWW server can respond to web requests, but cannot initiate a web request.)
10. Hosts in the DMZ are only permitted to respond to ICMP echo requests from hosts on the Inside network.
11. Unless otherwise stated, only specified traffic is permitted to leave
the DMZ network.
配置GUI
（I: Internet S: Sales F: Finanacial D: DMZ）
配置命令：
ASA Version 8.0(4)
!
hostname ciscoasa
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
name 10.0.0.12 DMZ_FTP
name .59.194.15 ShawDNS
name 10.0.0.11 DMZ_WWW
name 4.2.2.2 PublicDNS
!
interface Ethernet0/0
nameif I
security-level 0
ip address dhcp setroute
!
interface Ethernet0/1
nameif D
security-level 50
ip address 10.0.0.1 255.255.255.0
!
interface Ethernet0/2
nameif F
security-level 100
ip address 172.16.0.1 255.255.0.0
!
interface Ethernet0/3
nameif S
security-level 100
ip address 192.168.0.1 255.255.255.0
!
interface Management0/0
nameif management
security-level 100
ip address 192.168.1.1 255.255.255.0
management-only
!
ftp mode passive
object-group protocol TCPUDP
protocol-object udp
protocol-object tcp
object-group network DM_INLINE_NETWORK_1
network-object 172.16.0.0 255.255.0.0
network-object 192.168.0.0 255.255.255.0
object-group network DM_INLINE_NETWORK_2
network-object 172.16.0.0 255.255.0.0
network-object 192.168.0.0 255.255.255.0
object-group service DM_INLINE_TCP_1 tcp
port-object eq ftp
port-object eq ftp-data
object-group service DM_INLINE_TCP_2 tcp
port-object eq ftp
port-object eq ftp-data
object-group service DM_INLINE_TCP_3 tcp
port-object eq ftp
port-object eq ftp-data
object-group service DM_INLINE_TCP_4 tcp
port-object eq ftp
port-object eq ftp-data
access-list F_access_in extended permit object-group TCPUDP any 10.0.0.0 255.255.255.0 eq www
access-list F_access_in extended permit icmp any 10.0.0.0 255.255.255.0
access-list F_access_in extended permit tcp any any object-group DM_INLINE_TCP_3
access-list F_access_in extended permit udp any any eq domain
access-list D_access_in extended permit icmp any object-group
DM_INLINE_NETWORK_1
access-list D_access_in extended permit tcp any object-group
DM_INLINE_NETWORK_2 object-group DM_INLINE_TCP_1
access-list D_access_in extended permit tcp any any eq www
access-list S_access_in extended permit tcp any any object-group DM_INLINE_TCP_2
access-list S_access_in extended permit object-group TCPUDP any any eq www
access-list S_access_in extended permit icmp any any
access-list S_access_in extended permit ip any any inactive
access-list S_access_in extended permit udp any any eq domain
access-list I_access_in extended permit tcp any any object-group DM_INLINE_TCP_4
access-list I_access_in extended permit tcp any any eq www
access-list S_nat0_outbound extended permit ip any host DMZ_FTP
access-list S_nat0_outbound extended permit ip any host DMZ_WWW
access-list F_nat0_outbound extended permit ip any host DMZ_WWW
access-list F_nat0_outbound extended permit ip any host DMZ_FTP
pager lines 24
logging enable
logging asdm informational
mtu management 1500
mtu I 1500
mtu D 1500
mtu F 1500
mtu S 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-613.bin
no asdm history enable
arp timeout 14400
global (I) 1 interface
nat (F) 0 access-list F_nat0_outbound
nat (F) 1 0.0.0.0 0.0.0.0
nat (S) 0 access-list S_nat0_outbound
nat (S) 1 0.0.0.0 0.0.0.0
static (D,I) tcp interface www DMZ_WWW www netmask 255.255.255.255
access-group I_access_in in interface I
access-group D_access_in in interface D
access-group F_access_in in interface F
access-group S_access_in in interface S
route I 0.0.0.0 0.0.0.0 10.100.200.1 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 management
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
telnet timeout 5
ssh timeout 5
console timeout 0
dhcp-client client-id interface I
dhcpd dns ShawDNS
!
dhcpd address 192.168.1.2-192.168.1.254 management
dhcpd dns ShawDNS interface management
dhcpd enable management
!
dhcpd address 10.0.0.10-10.0.0.100 D
dhcpd dns ShawDNS interface D
dhcpd enable D
!
dhcpd address 172.16.0.2-172.16.0.254 F
dhcpd dns ShawDNS interface F
dhcpd enable F
!
dhcpd address 192.168.0.2-192.168.0.254 S
dhcpd dns ShawDNS interface S
dhcpd enable S
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:4f6cbef867f1efc432e7738edc5b0fd2
: end
asdm image disk0:/asdm-613.bin
asdm location DMZ_FTP 255.255.255.255 I
asdm location ShawDNS 255.255.255.255 F
asdm location DMZ_WWW 255.255.255.255 F
asdm location PublicDNS 255.255.255.255 F
no asdm history enable
