Hi Irmoore,
I have been given only one IP address. Can it be that the publicip and the pptserverip have the same IP address?
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Cisco PIX firewall PPTP connections to outside and Samba connections from DMZ to Inside
1) We are not being able to make connections to a VPN server using PPTP. It has obviously to do with our Cisco PIX firewall 'cause I can easily make connection to the same server from outside our network, using the same credentials. Please let us know how we can enable PPTP connections to the outside.
Note:- We have no problems connecting to another VPN server from within our network but that one uses IPSEC/UDP
2) An unrelated problem, but with the same firewall. We the machine 10.8.151.250 in the DMZ and need to mount a samba share on this machine from a samba server 10.8.150.10 which resides inside the network. How do we allow this?
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Answers
No. Problem is GRE which cannot be port-forwarded. You must have a dedicated IP
You may have limited success if you enable fixup pptp, but that was designed for internal users accessing an external server where the connection is initiated from inside.
fixup pptp 1723
was broken in some versions prior to 6.3(5)
What version PIX OS are you running?
We are running :- Cisco PIX Security Appliance Software Version 7.0(4)
I think I should probably make it a bit clearer than I did before. The VPN server(the one using the pptp protocol) that we are trying to connect to doesn't belong to us. Our users from within our network want to use their respective Windows VPN clients to connect to this server, but they are being unable to because of the (obvious) restrctions imposed by the firewall.
That's what it says here
http://www.cisco.com/warp/
OS 7.0(4) has a few bugs, this might be one of them. Suggest updating to 7.0(6) or even 7.22
This is from later versions of 7.2x
Pasted from:
http://www.cisco.com/unive
hostname(config)# class-map pptp-port
hostname(config-cmap)# match port tcp eq 1723
hostname(config-cmap)# exit
hostname(config)# policy-map pptp_policy
hostname(config-pmap)# class pptp-port
hostname(config-pmap-c)# inspect pptp
hostname(config-pmap-c)# exit
hostname(config)# service-policy pptp_policy interface outside
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by: lrmoorePosted on 2007-06-12 at 04:19:44ID: 19265050
1) you have to use a 1-1 static nat for the PPTP server to its own public IP, and allow tcp/1723 and GRE in acl
static (inside,outside) publicip pptpserverip netmask 255.255.255.255
access-list outside_access_in permit tcp any host publicip eq 1723
access-list outside_access_in permit gre any host publicip