Route from 1800 series VPN tunnel to internet through 3640 series
I have a Cisco 1800 series with a VPN Tunnel to my primary network.
I have a Cisco 3640 Series as main router at primary location, with 6 FastEthernet, internal network is 10.0.0.0 255.255.0.0, interface on cisco FE0/0 10.0.0.2......Fiber to Internet connected to fastethernet 169.254.1.2 on 3640. Other interfaces on 3640...172.x.x.x 192.x.x.x 163.x.x.x and 169.x.x.x All routing from internal network works well to all interfaces, and all 10.0.0.0 traffic can access internet. I've added the second router at location for a vpn connection and tunnel works well, (see config below-addresses, pw, and psk changed for privacy) computer on far side of tunnel 10.0.20.x and can access all devices on this side 10.0.0.0 network and FE0/0 on 1800 is 10.0.0.100 , however no tunnel traffic can get to internet through the 3640 10.0.0.2 as there is no route to get to 10.0.20.x traffic to 10.0.0.2 if looking for internet address. I tested a specific address and added a route for it to the 1800 and it works to get to internet, I can't add all ip addresses for routes for internet and there has to be an easy way to resolve this by sending any 10.0.20.x traffic looking for internet address to 10.0.0.2. interface FastEthernet0/0 on 1800 ip address 10.0.0.100 255.255.0.0 is directly connected to switch on 10.0.0.0 network...(inside)
here is the 1800 cfg
SCSOBCO#sh run Building configuration...
Current configuration : 1832 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname SCSOBCO ! boot-start-marker boot-end-marker ! enable secret enable password ! no aaa new-model ! resource policy ! ip cef ! crypto isakmp policy 1 encr 3des hash md5 authentication pre-share group 2 crypto isakmp key ******** address 18.104.22.168 ! ! crypto ipsec transform-set BCO-TSET esp-3des esp-md5-hmac mode transport ! crypto map BCO-MAP 10 ipsec-isakmp set peer 22.214.171.124 set transform-set BCO-TSET match address 172 ! interface Tunnel0 ip address 10.20.20.22 255.255.255.252 tunnel source 126.96.36.199 tunnel destination 188.8.131.52 ! interface FastEthernet0/0 ip address 10.0.0.100 255.255.0.0 ip nat inside ip virtual-reassembly speed auto half-duplex no mop enabled ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface Serial0/0/0 ip address 184.108.40.206 255.255.255.252 ip nat outside ip virtual-reassembly encapsulation ppp no fair-queue crypto map BCO-MAP ! router bgp 65505 no synchronization bgp router-id 10.20.20.22 bgp log-neighbor-changes neighbor 10.20.20.21 remote-as 22394 neighbor 10.20.20.21 default-originate neighbor 10.20.20.21 soft-reconfiguration inbound no auto-summary ! ip route 0.0.0.0 0.0.0.0 220.127.116.11 ! ! ip http server no ip http secure-server ! no logging trap access-list 100 permit ip any any access-list 172 permit gre host 18.104.22.168 host 22.214.171.124 ! control-plane ! line con 0 line aux 0 line vty 0 4 password login ! scheduler allocate 20000 1000 end
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