本帖最后由 siumem 于 2017-12-13 10:58 编辑 今天碰到一台ASA5512X，版本是9.6.3，做一个简单的static nat 。就内部服务器192.168.2.20映射到外部的一个地址，开放web服务，端口8181，服务器直接配置公网IP地址外面是可以访问的，然而在ASA上做NAT映射后就是访问不进来，奇怪的是show log可以看到明确被acl拒绝了，但是acl明明是开放了访问的，把版本升到9.7.1也不行，配置如下，哪位兄弟帮助看一下。
sh run
: Saved
ASA Version 9.7(1)4
!
enable password 8Ry2YjIyt7RRXU24 encrypted
xlate per-session deny tcp any4 any6
xlate per-session deny tcp any6 any4
xlate per-session deny tcp any6 any6
xlate per-session deny udp any4 any4 eq domain
xlate per-session deny udp any4 any6 eq domain
xlate per-session deny udp any6 any4 eq domain
xlate per-session deny udp any6 any6 eq domain
xlate per-session deny tcp any4 any4
names
!
interface GigabitEthernet0/0
nameif outside
security-level 0
ip address 180.180.180.82 255.255.255.240
!
interface GigabitEthernet0/1
nameif inside
security-level 100
ip address 172.16.2.253 255.255.255.0
!
!
!
boot system disk0:/asa971-4-smp-k8.bin
ftp mode passive
object network obj_vlan172
subnet 172.16.2.0 255.255.255.0
object network Jizhi_MIP
host 192.168.1.20
object network inside_vlan2
subnet 192.168.2.0 255.255.255.0
object network obj_180.180.180.90
host 180.180.180.90
access-list o2i extended permit icmp any any echo-reply
access-list o2i extended permit icmp any any source-quench
access-list o2i extended permit icmp any any unreachable
access-list o2i extended permit icmp any any time-exceeded
access-list o2i extended permit tcp any host 192.168.2.20 eq 8181
access-list o2i extended permit tcp any host 192.168.2.20 eq 3389
access-list o2i extended permit ip any host 192.168.2.20
access-list o2i extended permit icmp any any echo
access-list o2i extended permit ip any host 180.167.77.90
pager lines 24
logging enable
logging buffered warnings
mtu outside 1500
mtu inside 1500
mtu management 1500
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
arp rate-limit 8192
nat (inside,outside) source static Jizhi_MIP obj_180.167.77.90
!
object network obj_vlan172
nat (inside,outside) dynamic interface
object network inside_vlan2
nat (inside,outside) dynamic interface
access-group o2i in interface outside
route outside 0.0.0.0 0.0.0.0 180.167.77.81 1
route inside 192.168.1.0 255.255.255.0 172.16.2.254 1
route inside 192.168.2.0 255.255.255.0 172.16.2.254 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 sctp 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
timeout floating-conn 0:00:00
timeout conn-holddown 0:00:15
timeout igp stale-route 0:01:10
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
aaa authentication telnet console LOCAL
no snmp-server location
no snmp-server contact
telnet 192.168.2.0 255.255.255.0 inside
telnet timeout 5
ssh stricthostkeycheck
ssh timeout 5
ssh key-exchange group dh-group1-sha1
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
dynamic-access-policy-record DfltAccessPolicy
username cisco password kHXUGj3hWxtw0q2l encrypted privilege 15
!
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
no tcp-inspection
policy-map global_policy
class inspection_default
inspect ftp
inspect h323 h225
inspect h323 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 dns preset_dns_map
inspect icmp
inspect http
policy-map type inspect dns migrated_dns_map_2
parameters
message-length maximum client auto
message-length maximum 512
no tcp-inspection
policy-map type inspect dns migrated_dns_map_1
parameters
message-length maximum client auto
message-length maximum 512
no tcp-inspection
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
call-home
profile 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-alert-group environment
subscribe-to-alert-group inventory periodic monthly
subscribe-to-alert-group configuration periodic monthly
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:e81491547a9a98132a5372c0511bf982
: end
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谢谢大家的提醒，配置文本中object写得有错误，把192.168.2.20写成了192.168.1.20。
最终的原因是前端一台做纯路由的H3C ER路由器引起，估计是有ARP更新限制，更换了公网IP地址的主机后，长时间不通。重启都不行，最后直接把这台中由器拿掉了。
