我已经在路由器上配置了 PNAT。一切似乎都很好。我已为 NAT 路由器后面的服务器设置了静态 NAT 端口转发。
我已经设置了 ACL 来打开在 Ext. 接口上转发的端口
但是当我进行端口扫描时，只有 ssh 是打开的，其余端口都关闭了。
有人知道为什么会这样吗？谢谢
以下是会议内容：
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname OME-GW
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
!
!
dot11 syslog
ip source-route
!
!
!
!
ip cef
no ip bootp server
ip domain name *******
ip name-server [x.x.x.x]
ip name-server [x.x.x.x]
ip name-server 8.8.8.8
ip name-server 8.8.4.4
no ipv6 cef
!
multilink bundle-name authenticated
!
!
!
!
!
license udi pid CISCO1841 sn XXXXXX
!
redundancy
!
!
ip ssh port 22 rotary 1
!
class-map match-all win_kasp_updates_allow
match protocol http url "/.geo.kaspersky.com"
match protocol http url "/.windowsupdate.com"
match protocol http url "/update.windows.com"
match protocol http url "/windowsupdate.microsoft.com"
match protocol http url "/downloads4.kaspersky-labs.com"
match access-group 10
class-map match-all everything_else
match any
!
!
policy-map win_kasp_updates_allow_policy
class win_kasp_updates_allow
drop
class everything_else
!
!
!
!
!
!
!
!
interface FastEthernet0/0
ip address 192.168.1.21 255.255.255.0
ip access-group 103 in
ip flow ingress
ip flow egress
ip nat inside
ip virtual-reassembly
duplex auto
speed auto
!
service-policy input win_kasp_updates_allow_policy
!
interface FastEthernet0/1
ip address [Public_IP] 255.255.255.252
ip access-group 102 in
ip nat outside
ip virtual-reassembly
duplex auto
speed auto
!
!
interface Serial0/1/0
no ip address
shutdown
no fair-queue
clock rate 2000000
!
!
interface Serial0/1/1
no ip address
shutdown
clock rate 2000000
!
!
ip default-gateway [ISP_P2P_IP]
ip forward-protocol nd
no ip http server
no ip http secure-server
!
ip flow-export version 5
ip flow-export destination 192.168.1.151 9991
ip flow-top-talkers
top 10
sort-by bytes
!
ip dns server
ip nat inside source list 1 interface FastEthernet0/1 overload
ip nat inside source static tcp 192.168.1.20 25 [Public_IP] 25 extendable
ip nat inside source static tcp 192.168.1.20 25 [Public_IP] 26 extendable
ip nat inside source static tcp 192.168.1.20 53 [Public_IP] 53 extendable
ip nat inside source static udp 192.168.1.20 53 [Public_IP] 53 extendable
ip nat inside source static tcp 192.168.1.20 110 [Public_IP] 110 extendable
ip nat inside source static udp 192.168.1.20 1194 [Public_IP] 1194 extendable
ip route 0.0.0.0 0.0.0.0 [ISP_P2P_IP]
!
access-list 1 permit 192.168.1.0 0.0.0.255
access-list 10 deny 192.168.1.22
access-list 10 permit 192.168.1.0 0.0.0.255
access-list 102 permit tcp any any eq pop3
access-list 102 permit tcp any any eq smtp
access-list 102 permit tcp any any eq 1194
access-list 102 permit udp any any
access-list 102 permit tcp any any
access-list 102 permit icmp any [ISP_P2P_IP] 0.0.0.3 echo
access-list 102 permit icmp any [ISP_P2P_IP] 0.0.0.3 echo-reply
access-list 102 deny ip host 195.154.109.72 any
access-list 102 deny ip 192.168.0.0 0.0.255.255 any
access-list 102 deny ip 172.16.0.0 0.15.255.255 any
access-list 102 deny ip 10.0.0.0 0.255.255.255 any
access-list 102 deny ip 127.0.0.0 0.255.255.255 any
access-list 102 deny ip 255.0.0.0 0.255.255.255 any
access-list 102 deny ip 224.0.0.0 31.255.255.255 any
access-list 102 deny ip host 0.0.0.0 any
access-list 103 deny ip host 192.168.1.9 any
access-list 103 deny ip host 192.168.1.35 any
access-list 103 permit ip any any
access-list 103 permit tcp 192.168.1.0 0.0.0.255 any
access-list 103 permit udp host 192.168.1.26 eq domain any
access-list 103 permit tcp host 192.168.1.26 eq domain any
access-list 103 permit udp 192.168.1.0 0.0.0.255 any
no cdp run
!
!
!
!
snmp-server community secret RO 90
!
!
control-plane
!
!
!
line con 0
line aux 0
line vty 0 4
exec-timeout 5 0
login local
rotary 1
transport input ssh
!
scheduler allocate 20000 1000
end
答案1
我设法解决了这个问题，问题出在我的服务器的默认网关上运行路由器后面的服务。我仍然让它指向我的旧 ISP。问题解决了