How do I configure port forwarding?
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08-12-2013 01:20 PM - edited 03-04-2019 08:44 PM
I am trying to do the simplest of configurations (I think, anyway) and I can't get it to work. A little router with a cellular interface (working) and overloading the inside hosts on VLAN1 to hit the internet. That is working.
I want place a host on vlan1 with IP 192.168.1.102 that has a built in webserver and hit it from the outside. Not sure what I am doing incorrectly, but it isn't working. Also want to RDP into a host at 192.168.1.100 - and can't do that either.
I'm stumped. Any idea what I'm missing?
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
service timestamps debug datetime msec localtime show-timezone
service timestamps log datetime msec localtime show-timezone
service password-encryption
service sequence-numbers
!
hostname sprint-3g
!
boot-start-marker
boot-end-marker
!
!
logging buffered 51200
logging console critical
!
no aaa new-model
!
clock timezone PCTime -8 0
clock summer-time PCTime date Apr 6 2003 2:00 Oct 26 2003 2:00
crypto pki token default removal timeout 0
!
no ip source-route
ip cef
!
!
!
ip dhcp excluded-address 192.168.1.1 192.168.1.200
!
ip dhcp pool Inside-IP-Pool
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
dns-server 8.8.4.4 8.8.8.8
lease 45
!
!
no ip bootp server
ip domain name yourdomain.com
no ipv6 cef
!
!
multilink bundle-name authenticated
chat-script cdma "" "ATDT#777" TIMEOUT 60 "CONNECT"
license udi pid C819G-S-K9 sn FTX155865LZ
!
!
username cisco privilege 15 secret cisco
!
!
!
controller Cellular 0
!
ip tcp synwait-time 10
!
!
interface Cellular0
ip address negotiated
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat outside
ip virtual-reassembly in
encapsulation ppp
dialer in-band
dialer string cdma
dialer-group 1
!
interface FastEthernet0
no ip address
spanning-tree portfast
!
interface FastEthernet1
no ip address
spanning-tree portfast
!
interface FastEthernet2
no ip address
spanning-tree portfast
!
interface FastEthernet3
no ip address
spanning-tree portfast
!
interface GigabitEthernet0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
shutdown
duplex auto
speed auto
!
interface Serial0
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
shutdown
clock rate 2000000
!
interface Vlan1
description VLAN1
ip address 192.168.1.1 255.255.255.0
no ip redirects
no ip unreachables
no ip proxy-arp
ip flow ingress
ip nat inside
ip virtual-reassembly in
ip tcp adjust-mss 1452
!
ip forward-protocol nd
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
!
!
ip nat inside source list PrivateIP interface Cellular0 overload
ip route 0.0.0.0 0.0.0.0 Cellular0
!
ip access-list extended PrivateIP
permit ip 192.168.1.0 0.0.0.255 any
ip access-list extended WebPorts
permit tcp any host 192.168.1.102 eq www
permit tcp any host 192.168.1.102 eq 443
permit tcp any host 192.168.1.100 eq 3389
!
ip sla 1
icmp-echo 4.2.2.2 source-interface Cellular0
frequency 5
ip sla schedule 1 life forever start-time now
logging trap debugging
access-list 1 permit any
dialer-list 1 protocol ip list 1
no cdp run
!
!
!
!
!
control-plane
!
line con 0
login local
line aux 0
line 3
exec-timeout 0 0
script dialer cdma
modem InOut
no exec
speed 144000
line vty 0 4
privilege level 15
login local
transport input telnet ssh
!
scheduler allocate 20000 1000
scheduler interval 500
end
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08-12-2013 01:26 PM
It looks like you need to add:
ip nat inside source static tcp 192.168.1.102 80 interface cell0 80
ip nat inside source static tcp 192.168.1.100 3389 interface cell0 3389
HTH,
John
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08-12-2013 01:42 PM
Looks like I am still missing something. Was just reading up on that command as I got your reply, and you seem to be correct, however it still is not working.
The way I see it, I should be able to browse to the external IP address of the cellular router on my smartphone and bring up the webpage.
I know the webpage is working since I can browse to it from a laptop that is on the inside of the network.
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08-12-2013 01:58 PM
Question:...
Do I need to kill these on the router for it to work?
ip http server
ip http authentication local
ip http secure-server
ip http timeout-policy idle 60 life 86400 requests 10000
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08-12-2013 02:10 PM
Our https decided to start working! Thanks for the help.
http isn't working, and we are not sure why, but I think we can deal with that since https work.
Thanks again for your help!

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08-13-2013 01:50 AM
Yes, you need to do:
#no ip http server
#no ip http-secure server
