我正在尝试设置一个新的 ASA 5510。我的设置非常简单，内部有一个 /24，NAT 到外部的 DHCP 地址。内部的一切工作正常，我可以从外部设备 ping 外部接口。无论我做什么，我都无法让任何内部的东西跨越边界路由到外部并返回。为了尝试消除 ACL 问题的可能性，我在内部和外部接口的传入访问列表中添加了允许任何规则。我很感激任何能得到的帮助。这是 sh 运行。
: Saved
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ASA Version 8.4(3)
!
hostname gateway
domain-name xxx.local
enable password xxx encrypted
passwd xxx encrypted
names
!
interface Ethernet0/0
nameif outside
security-level 0
ip address dhcp setroute
!
interface Ethernet0/1
nameif inside
security-level 100
ip address 10.x.x.x 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
nameif management
security-level 100
ip address 192.168.1.1 255.255.255.0
management-only
!
ftp mode passive
dns domain-lookup inside
dns server-group DefaultDNS
name-server 10.x.x.x
domain-name xxx.local
same-security-traffic permit inter-interface
same-security-traffic permit intra-interface
object network inside-network
subnet 10.x.x.x 255.255.255.0
object-group protocol TCPUDP
protocol-object udp
protocol-object tcp
access-list outside_access_in extended permit ip any any
access-list inside_access_in extended permit ip any any
pager lines 24
logging enable
logging buffered informational
logging asdm informational
mtu management 1500
mtu inside 1500
mtu outside 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
icmp permit any inside
icmp permit any outside
no asdm history enable
arp timeout 14400
!
object network inside-network
nat (any,outside) dynamic interface
access-group inside_access_in in interface inside
access-group outside_access_in in interface outside
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 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
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
aaa authentication http console LOCAL
http server enable
http 192.168.1.0 255.255.255.0 management
http 10.x.x.x 255.255.255.0 inside
http authentication-certificate management
http authentication-certificate inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
telnet timeout 5
ssh 192.168.1.0 255.255.255.0 management
ssh 10.x.x.x 255.255.255.0 inside
ssh timeout 5
ssh version 2
console timeout 0
dhcp-client client-id interface outside
dhcpd address 192.168.1.2-192.168.1.254 management
dhcpd enable management
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
username xxx password xxx encrypted
!
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
inspect icmp
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
Cryptochecksum:fe19874e18fe7107948eb0ada6240bc2
: end
no asdm history enable
答案1
你在那里坚持静态路由吗？
ASA(config)# route [接口名称] [目标地址] [网络掩码] [网关]
答案2
由于某种原因，ARP 条目未添加到您的默认网关的 arp 表中。作为临时修复，您可以尝试使用以下命令手动添加：
（来自配置 t 模式）
arp outside 10.42.45.46 2a30.4410.2789 alias
至于为什么会发生这种情况，我不确定，但您可以尝试通过进行数据包捕获来找出原因，看看您的 arp 请求是否发出并且回复是否返回。如果是这样，如果您对设备进行维护，我建议您向 Cisco 提交 TAC 案例。