Hi all,
I am required to setup a private CS game server behind a cisco 877 router. I've set up the router to accept PPTP VPN connections (least overhead) and things seem to work fine apart from the fact that I cannot seem to be able to forward UDP broadcast packets.
In order for the/any game to be able to find any running game servers using the built in game browser it needs to be able to get UDP broadcast packets. Therefore I need to forward any UDP broadcasts through the VPN to the remote VPN clients but I haven't been able to do so successfully.
Everything else seems to work fine as the remote users are
a)able to ping all the clients in the internal network behind the router plus
b)they can access the file server too via the internal ip.
c)they can connect to the game server if they supply the IP of the server directly
However, this is not an acceptable solution as this is only a test server and I'm also required to setup other game servers and some of these games don't have a console that you can supply an IP to connect as a player can only do so using the game's built-in LAN game browser.
The internal lan is 192.168.1.0/24
The router has an internal-ip 192.168.1.10 (VLAN1)
The VPN clients get addresses from 192.168.1.128 - 192.168.1.254
Virtual-Template 1 binds to VLAN1 interface.
I've tried supplying the the ip helper-address command both under the VLAN 1 and the virtual-template 1 interfaces but I didn't get any results.
Any suggestions or advice as what to try next or how to debug this issue?
Any help is greatly appreciated
Here's my config:
!
! NVRAM config last updated at 14:04:39 Athens Sat Oct 10 2009
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
!
hostname Router
!
boot-start-marker
boot-end-marker
!
enable secret 5 xxxx
!
no aaa new-model
ip cef
!
!
no ip dhcp use vrf connected
ip dhcp binding cleanup interval 200
ip dhcp excluded-address 192.168.1.1 192.168.1.15
!
ip dhcp pool lan
import all
network 192.168.1.0 255.255.255.0
default-router 192.168.1.10
!
!
multilink bundle-name authenticated
vpdn enable
!
vpdn-group 1
! Default PPTP VPDN group
accept-dialin
protocol pptp
virtual-template 1
!
!
username xxxx privilege 15 secret 5 xxxxxx
!
interface ATM0
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.1 point-to-point
no snmp trap link-status
pvc 8/35
pppoe-client dial-pool-number 1
!
!
interface FastEthernet0
!
interface FastEthernet1
!
interface FastEthernet2
!
interface FastEthernet3
!
interface Virtual-Template1
ip unnumbered Vlan1
peer default ip address pool PPTP-Pool
no keepalive
ppp encrypt mppe 128
ppp authentication ms-chap ms-chap-v2
!
interface Vlan1
description Internal Network
ip address 192.168.1.10 255.255.255.0
ip nat inside
ip virtual-reassembly
ip tcp adjust-mss 1452
!
interface Vlan14
no ip address
!
interface Dialer0
description External Network (ADSL)
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
dialer pool 1
dialer-group 1
ppp authentication chap pap callin
ppp chap hostname xxxxxxxxxx
ppp chap password 0 xxxxxxxxxxx
ppp pap sent-username xxxxxxxxx password 0 xxxxxxxxxx
ppp ipcp dns request accept
!
ip local pool PPTP-Pool 192.168.1.128 192.168.1.254
ip route 0.0.0.0 0.0.0.0 Dialer0
!
!
ip http authentication local
ip http secure-server
ip dns server
ip nat inside source list 1 interface Dialer0 overload
!
access-list 1 remark INSIDE_IF=Vlan1
access-list 1 remark SDM_ACL Category=2
access-list 1 permit 192.168.1.0 0.0.0.255
dialer-list 1 protocol ip permit
!
!
end
