现任明教教主ASA8.4 ×××试验系列一：IKEv1 L2L

最近一直在研究CCNP Security Firewall v1.0，现在基本算是研究完毕了！发现Cisco ASA 8.4的变化特别大，真的是越来越像checkpoint防火墙了，不管是NAT还是最近才出现的全局访问控制列表，都和cp防火墙如出一辙。Firewall v1.0研究完毕后，下一个研究目标就是 ××× v1.0，主要介绍ASA上的×××。ASA8.4之后的×××变化也特别大，主要是IKEv2的引入，IOS15.1T（现在好像还下载不了）也开始支持IKEv2了。可以看出来IKEv2是一个必然的趋势，所以最近我会花不少时间来研究它。当然研究新技术之前，先了解一下在ASA8.4如何配置传统的IKEv1的×××是很有必要的。下面我就对ASA8.4上传统IKEv1 L2L×××进行介绍。(ASA8.4后续×××试验会陆续推出）

试验拓扑：

 

Outside路由器配置：

hostname Outside
!
boot-start-marker
boot-end-marker
!
enable password cisco
!
no aaa new-model
memory-size iomem 25
ip cef
!
!
!
!
no ip domain lookup
!
multilink bundle-name authenticated
!
!
!
!
!
archive
log config
hidekeys
!
!
crypto isakmp policy 10
authentication pre-share
crypto isakmp key cisco address 202.100.1.10
!
!
crypto ipsec transform-set cisco esp-des esp-md5-hmac
!
crypto map cisco 10 ipsec-isakmp
set peer 202.100.1.10
set transform-set cisco
match address ***
!
!
!
!
!
!
interface Loopback0
ip address 1.1.1.1 255.255.255.255
!
interface FastEthernet0
ip address 202.100.1.1 255.255.255.0
speed auto
crypto map cisco
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 202.100.1.10
!
!
no ip http server
no ip http secure-server
!
ip access-list extended ***
permit ip host 1.1.1.1 host 2.2.2.2
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
password cisco
login
line vty 5 15
password cisco
login
!
end

ASA配置：

hostname ASA
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Ethernet0/0
nameif Outside
security-level 0
ip address 202.100.1.10 255.255.255.0
!
interface Ethernet0/1
nameif Inside
security-level 100
ip address 10.1.1.10 255.255.255.0
!
interface Ethernet0/2
shutdown
no nameif
no security-level
no ip address
!
interface Ethernet0/3
shutdown
no nameif
no security-level
no ip address
!
interface Management0/0
shutdown
no nameif
no security-level
no ip address
management-only
!
ftp mode passive
object network Inside-Router-Loop0
subnet 2.2.2.0 255.255.255.0
object network Remote-***-address
subnet 1.1.1.0 255.255.255.0
access-list *** extended permit ip host 2.2.2.2 host 1.1.1.1 （感兴趣流）
pager lines 24
mtu Outside 1500
mtu Inside 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
nat (Inside,Outside) source static Inside-Router-Loop0 Inside-Router-Loop0 destination static Remote-***-address Remote-***-address（使用Twice identity NAT旁路掉×××感兴趣流）
!
object network Inside-Router-Loop0（普通上网用PAT）
nat (Inside,Outside) dynamic interface

route Outside 0.0.0.0 0.0.0.0 202.100.1.1 1（解决路由问题）
route Inside 2.2.2.2 255.255.255.255 10.1.1.1 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
timeout tcp-proxy-reassembly 0:01:00
dynamic-access-policy-record DfltAccessPolicy
no snmp-server location
no snmp-server contact
crypto ipsec ikev1 transform-set cisco esp-des esp-md5-hmac （第二阶段转换集）
crypto map cry-map 10 match address *** （crypto map配置）
crypto map cry-map 10 set peer 202.100.1.1
crypto map cry-map 10 set ikev1 transform-set cisco
crypto map cry-map interface Outside （调用crypto map到外部接口）
crypto ikev1 enable Outside （外部接口激活IKEv1）
crypto ikev1 policy 1 （IKEv1第一阶段策略）
authentication pre-share
encryption des
hash sha
group 1
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
web***
anyconnect-essentials
tunnel-group 202.100.1.1 type ipsec-l2l （tunnel-group配置）
tunnel-group 202.100.1.1 ipsec-attributes
ikev1 pre-shared-key cisco
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
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
inspect ip-options
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:1b511154bb6ceb038c38677ae2b15c67
: end

Inside路由器配置：

hostname Inside
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip cef
!
!
!
!
!
multilink bundle-name authenticated
!
!
!
!
!
archive
log config
hidekeys
!
!
!
!
!
!
!
interface Loopback0
ip address 2.2.2.2 255.255.255.255
!
interface FastEthernet0
ip address 10.1.1.1 255.255.255.0
speed auto
!
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 10.1.1.10
!
!
no ip http server
no ip http secure-server
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
end