Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations SkipVought on being selected by the Tek-Tips community for having the most helpful posts in the forums last week. Way to Go!

Setting up PPTP on Cisco PIX 1

Status
Not open for further replies.

etaketa

Technical User
May 4, 2005
43
0
0
US
I can establish a PPTP VPN connection from the outside (W2K & XP PC's), grab an ip address from the pool & that's about it. Can't reach any internal resources via any service (ping, rdp & smtp ...)

What am I missing here?
Building configuration...
: Saved
:
PIX Version 6.3(1)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password gn8Iu7y8lhYxN8g5 encrypted
passwd gn8Iu7y8lhYxN8g5 encrypted
hostname MotherEagle
domain-name clicksafety.com
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
fixup protocol ils 389
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol sip 5060
fixup protocol sip udp 5060
fixup protocol skinny 2000
fixup protocol smtp 25
fixup protocol sqlnet 1521
names
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside XX.233.191.98 255.255.255.224
ip address inside 10.0.0.2 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool vpn_ip_pool 10.0.0.230-10.0.0.254
pdm location 10.0.0.224 255.255.255.224 outside
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
timeout xlate 0:05:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h225 1:00:00
timeout h323 0:05:00 mgcp 0:05:00 sip 0:30:00 sip_media 0:02:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server RADIUS protocol radius
aaa-server LOCAL protocol local
http server enable
http 10.0.0.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-pptp
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac
isakmp key ******** address 0.0.0.0 netmask 0.0.0.0
telnet 10.0.0.0 255.255.255.0 inside
telnet timeout 5
ssh 10.0.0.0 255.255.255.0 inside
ssh timeout 5
management-access inside
console timeout 0
vpdn group PPTP-VPDN-GROUP accept dialin pptp
vpdn group PPTP-VPDN-GROUP ppp authentication mschap
vpdn group PPTP-VPDN-GROUP ppp encryption mppe 128 required
vpdn group PPTP-VPDN-GROUP client configuration address local vpn_ip_pool
vpdn group PPTP-VPDN-GROUP client configuration dns 10.0.0.1
vpdn group PPTP-VPDN-GROUP pptp echo 60
vpdn group PPTP-VPDN-GROUP client authentication local
vpdn username test password *********
vpdn username test2 password *********
vpdn enable outside
vpdn enable inside
dhcpd address 10.0.0.100-10.0.0.200 inside
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd auto_config outside
terminal width 80
Cryptochecksum:7b73b412e451c9fe726555b26ed1c3c6
: end
[OK]

 
your ip pool for the pptp clients cannot be the same as the inside subnet

try changing

ip local pool vpn_ip_pool 10.0.0.230-10.0.0.254

to

ip local pool vpn_ip_pool 10.0.1.230-10.0.1.254

or something similar. It's been a while since I set up PPTP on my firewalls, so don't recall it all, but I remember that part.
 
The strange thing is it wont even connect unless I add the remote clients ip address as an outside host and then click the box that says a static route to the pix outside interface.

example) 24.11.22.23 clients home ip address ---->plugged into the pix as an outside host--->then a static route to XX.299.222.11 (the pix outside interface)

All the clients public ip addresses are dynamic so im going to have to re-plug in all of their address as they change. i must be doing something wrong.
 
Wish I could offer more then a vague guess on this one, but here goes.

I don't see any routes set up in the posted config.

Mostly you'll only need 1 route command that can handle all traffic and it'll likely look something like this:

route outside 0.0.0.0 0.0.0.0 XX.YY.XX.YY

Use the default gateway as provided by your ISP for your connection.
 
I finally figured out why the vpn wasn't working, its because i had to apply a fixup. fixup protocol pptp 1723
now i can connect fine. i also unchecked the use default gateway check mark on the vpn connection under advanced tcp properties and now i can surf the net and access network resources at the same time.
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top