- 我正在运行具有 Security Plus 的 ASA 5505
- 我可以从内部和 dmz VLAN 访问互联网
- 我可以从内部远程桌面访问内部的另一台机器
- 我可以 ping 内部机器和互联网上的机器
- 我正在使用 ASDM 来配置路由器。
我如何才能远程桌面连接到我的 DMZ？
以下是我的配置和数据包跟踪
Result of the command: "sh run"
: Saved
:
ASA Version 8.2(5)
!
hostname evo-fw-ext
enable password *password* encrypted
passwd *password* encrypted
names
name 10.10.1.200 buildserver
name 192.168.1.2 evo-fw-int
name 10.10.1.100 webserver
name *myip* outside-buildserver
name *myip* outside-webserver
name 192.168.1.10 appserver
name 192.168.1.250 vpn-host-1
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
switchport access vlan 5
!
interface Ethernet0/7
switchport access vlan 5
!
interface Vlan1
nameif inside
security-level 100
ip address 192.168.1.1 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address 209.94.254.250 255.255.255.248
!
interface Vlan5
nameif dmz
security-level 50
ip address 10.10.1.1 255.255.255.0
!
ftp mode passive
object-group service DM_INLINE_TCP_1 tcp
port-object eq www
port-object eq https
object-group service DM_INLINE_TCP_2 tcp
port-object eq www
port-object eq https
access-list inside_nat0_outbound extended permit ip any 192.168.1.248 255.255.255.248
access-list outside_access_in extended permit tcp any host outside-webserver object-group DM_INLINE_TCP_1
access-list outside_access_in extended permit tcp any host outside-buildserver object-group DM_INLINE_TCP_2
pager lines 24
logging enable
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
ip local pool VPN1 vpn-host-1-192.168.1.255 mask 255.255.255.0
no failover
icmp unreachable rate-limit 1 burst-size 1
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 0.0.0.0 0.0.0.0
nat (dmz) 1 0.0.0.0 0.0.0.0
static (dmz,outside) tcp outside-webserver www webserver www netmask 255.255.255.255
static (dmz,outside) tcp outside-buildserver www buildserver www netmask 255.255.255.255
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 *gateway* 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
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
crypto ipsec transform-set ESP-3DES-SHA esp-3des esp-sha-hmac
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac
crypto ipsec transform-set ESP-DES-SHA esp-des esp-sha-hmac
crypto ipsec transform-set ESP-DES-MD5 esp-des esp-md5-hmac
crypto ipsec transform-set ESP-AES-192-MD5 esp-aes-192 esp-md5-hmac
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
crypto ipsec transform-set ESP-AES-256-SHA esp-aes-256 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-SHA esp-aes esp-sha-hmac
crypto ipsec transform-set ESP-AES-192-SHA esp-aes-192 esp-sha-hmac
crypto ipsec transform-set ESP-AES-128-MD5 esp-aes esp-md5-hmac
crypto ipsec security-association lifetime seconds 28800
crypto ipsec security-association lifetime kilobytes 4608000
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set pfs
crypto dynamic-map SYSTEM_DEFAULT_CRYPTO_MAP 65535 set transform-set ESP-AES-128-SHA ESP-AES-128-MD5 ESP-AES-192-SHA ESP-AES-192-MD5 ESP-AES-256-SHA ESP-AES-256-MD5 ESP-3DES-SHA ESP-3DES-MD5 ESP-DES-SHA ESP-DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic SYSTEM_DEFAULT_CRYPTO_MAP
crypto map outside_map interface outside
crypto isakmp enable outside
crypto isakmp policy 10
authentication pre-share
encryption aes-256
hash sha
group 2
lifetime 86400
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd auto_config outside
!
dhcpd address 192.168.1.5-192.168.1.254 inside
dhcpd dns 8.8.8.8 8.8.4.4 interface inside
dhcpd enable inside
!
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
anyconnect-essentials
group-policy colo internal
group-policy colo attributes
dns-server value 8.8.8.8 8.8.4.4
vpn-tunnel-protocol IPSec
username un password pw encrypted privilege 0
username un attributes
vpn-group-policy colo
tunnel-group colo type remote-access
tunnel-group colo general-attributes
address-pool VPN1
default-group-policy colo
tunnel-group colo ipsec-attributes
pre-shared-key *****
!
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
no call-home reporting anonymous
Cryptochecksum:*checksum*
: end
数据包追踪
命令结果：“packet-tracer input inside tcp 192.168.1.5 12345 10.10.1.100 3389 xml”
<Phase>
<id>1</id>
<type>ROUTE-LOOKUP</type>
<subtype>input</subtype>
<result>ALLOW</result>
<config>
</config>
<extra>
in 10.10.1.0 255.255.255.0 dmz
</extra>
</Phase>
<Phase>
<id>2</id>
<type>IP-OPTIONS</type>
<subtype></subtype>
<result>ALLOW</result>
<config>
</config>
<extra>
</extra>
</Phase>
<Phase>
<id>3</id>
<type>NAT</type>
<subtype></subtype>
<result>DROP</result>
<config>
nat (inside) 1 0.0.0.0 0.0.0.0
match ip inside any dmz any
dynamic translation to pool 1 (No matching global)
translate_hits = 15, untranslate_hits = 0
</config>
<extra>
</extra>
</Phase>
<result>
<input-interface>inside</input-interface>
<input-status>up</input-status>
<input-line-status>up</input-line-status>
<output-interface>dmz</output-interface>
<output-status>up</output-status>
<output-line-status>up</output-line-status>
<action>drop</action>
<drop-reason>(acl-drop) Flow is denied by configured rule</drop-reason>
</result>
答案1
global对于来自 192.168.1.5 到insideIP dmz10.10.1.100 的流量，没有进行 NAT 。这会nat (inside) 1 0.0.0.0 0.0.0.0产生这样的期望。
将以下内容添加到您的inside_nat0_outboundACL 以允许 192.168.1.0/24 主机访问 10.10.1.0/24 主机而无需 NAT。
access-list inside_nat0_outbound extended permit ip 192.168.1.0 255.255.255.0 10.10.1.0 255.255.255.0
（您的inside_nat0_outboundACL 让我有点摸不着头脑。为什么有人希望主机 192.168.1.248 - 192.168.254 在没有 NAT 的情况下传到互联网，这有点奇怪......）