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[Openvpn-users] can ping and dns, but not pop or rdp.


  • Subject: [Openvpn-users] can ping and dns, but not pop or rdp.
  • From: "Milton R. Calnek" <mcalnek@xxxxxxxxxx>
  • Date: Tue, 5 Apr 2005 11:30:19 -0600

Hi all,

I'm having trouble making openvpn to allow tcp connections.

Here's my layout:

winxp --------+
linux wkstn --+
win2k server -+-- openvpn server --+ internet

win2k wkstn --+-- openvpn client --+ internet

The ultimate goal is to allow the win2k wkstn to use the exchange server
on the win2k server and for the linux wkstn to rdp to the win2k wkstn.

What works:
Ping from win2k wkstn to win2k server
Nslookup from win2k wkstn to win2k server

Ping from linux wkstn to win2k wkstn
[root@mrcwkstn nmap]# ping -f -s 1400 172.20.5.3
PING 172.20.5.3 (172.20.5.3) 1400(1428) bytes of data.
........        
--- 172.20.5.3 ping statistics ---
1071 packets transmitted, 1063 received, 0% packet loss, time 15405ms
rtt min/avg/max/mdev = 31.857/74.165/192.469/33.227 ms, pipe 15,
ipg/ewma 14.398/47.322 ms


Openvpn server:
RH Linux 9.
Openvpn 2-rc16
Shorewall 2.0.10

Shorewall configuration:
Policy
#SOURCE         DEST            POLICY          LOG
LIMIT:BURST
#                                               LEVEL
loc             vpn             ACCEPT
vpn             loc             ACCEPT
loc             all             DROP            info
net             all             DROP            info

all             all             DROP            info 

interfaces
#ZONE    INTERFACE      BROADCAST       OPTIONS
net     eth0    detect # Relocated to hosts
loc     eth1    detect
vpn     tap0    detect
vpn     tun0    detect

tunnels
# TYPE                  ZONE    GATEWAY         GATEWAY
#                                               ZONE
openvpn:5000    net     ip_open_vpn_client

Openvpn config:
remote ip_open_vpn_client
port 5000
dev tun0
ifconfig 192.168.0.1 192.168.0.2
#dev tap0
#ifconfig 192.168.0.1 255.255.255.252
route 172.20.5.0 255.255.255.0 192.168.0.2
secret keys/stoon.key
ping 10
comp-lzo
verb 3

Openvpn client
Redhat linux 9
Shorewall 2.0.10
Openvpn 2-rc16

Shorewall config:
Policy
#SOURCE         DEST            POLICY          LOG
LIMIT:BURST
#                                               LEVEL
loc     vpn     ACCEPT
loc     net     ACCEPT

vpn     loc     ACCEPT
vpn     net     REJECT

net     all     DROP    info

all     all     DROP    info 
#LAST LINE -- DO NOT REMOVE

tunnels
openvpn:5000    net     ip_of_openvpn_server
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE

interfaces
#ZONE    INTERFACE      BROADCAST       OPTIONS
#
net     eth0    detect
norfc1918,nobogons,routefilter,blacklist,tcpflags,routeback,nosmurfs
loc     eth1    detect  routefilter,tcpflags,routeback,detectnets
vpn     tap0    detect
vpn     tun0    detect
#LAST LINE -- ADD YOUR ENTRIES BEFORE THIS ONE -- DO NOT REMOVE

Openvpn config:
remote ip_of_openvpn_server
port 5000
dev tun0
ifconfig 192.168.0.2 192.168.0.1
#dev tap0
#ifconfig 192.168.0.2 255.255.255.252
route 198.73.67.0 255.255.255.0 192.168.0.1
secret keys/regina.key
ping 10
comp-lzo
verb 1
mute 10

--
Milton Calnek
mcalnek@xxxxxxxxxx
+1 306 359 6939



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