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need help configuring a PIX for basic VPN

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praks25

MIS
Sep 5, 2003
13
hi all,
this is my first crack at the PIX.
I wanna be able to allow users to VPN into the office remotely.
I just can't seem to get the PIX to allow inbound basic pptp connections
the error I get when i try and dial in through MS VPN dialer is this

error 651: the modem (or other networking device) has reported an error.

I have the PIX firewall logging VPN info and everytime the connection is tried this is what i see inside the firewall

pptp: socket (something) 0fd

here is a copy of the pix config

any help would be greatly appreciated

User Access Verification

PIX Version 6.3(1)
interface ethernet0 100full
interface ethernet1 100full
interface ethernet2 auto shutdown
interface ethernet3 auto shutdown
nameif ethernet0 outside security0
nameif ethernet1 inside security100
nameif ethernet2 intf2 security4
nameif ethernet3 intf3 security6
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd .7Z3JGvXPROuK6nt encrypted
hostname XXXXXXXXXXXXX
domain-name ciscopix.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 pptp 1723
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
access-list ping_acl permit icmp any any
access-list acl_out permit icmp any any
access-list acl_out permit tcp any any eq www
access-list acl_out permit tcp any host XXX.XXX.XXX.XXX eq pptp
access-list acl_out permit ip 10.1.1.0 255.255.255.0 192.168.1.0 255.255.255.0
access-list acl_in permit icmp any any
pager lines 24
logging on
logging console debugging
logging buffered errors
mtu outside 1500
mtu inside 1500
mtu intf2 1500
mtu intf3 1500
ip address outside XXX.XXX.XXX.XXX 255.255.255.0
ip address inside 10.90.10.253 255.255.255.0
no ip address intf2
no ip address intf3
ip audit info action alarm
ip audit attack action alarm
ip local pool mantisVPN 10.90.10.111-10.90.10.120
no failover
failover timeout 0:00:00
failover poll 15
no failover ip address outside
no failover ip address inside
no failover ip address intf2
no failover ip address intf3
pdm location 192.168.0.2 255.255.255.255 inside
pdm history enable
arp timeout 14400
global (outside) 1 XXX.XXX.XXX.XXX-XXX.XXX.XXX.XXX netmask 255.255.255.0
global (outside) 1 XXX.XXX.XXX.XXX netmask 255.255.255.0
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
static (inside,outside) XXX.XXX.XXX.XXX 10.90.10.209 netmask 255.255.255.255 10 0
access-group acl_out in interface outside
access-group acl_in in interface inside
route outside 0.0.0.0 0.0.0.0 XXX.XXX.XXX.XXX 1
timeout xlate 3:00:00
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
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
no floodguard enable
sysopt connection permit-pptp
vpngroup 1 address-pool pptp-pool
vpngroup 1 default-X
vpngroup 1 split-tunnel 100
vpngroup 1 idle-time 1800
telnet 10.90.10.0 255.255.255.0 inside
telnet timeout 60
ssh XXX.XXX.XXX.XXX 255.255.255.0 outside
ssh timeout 60
console timeout 0
vpdn group 1 accept dialin pptp
vpdn group 1 ppp authentication pap
vpdn group 1 ppp authentication chap
vpdn group 1 ppp authentication mschap
vpdn group 1 client configuration address local pptp-pool
vpdn group mantis pptp echo 60
vpdn username test password *******
vpdn enable outside
terminal width 80
Cryptochecksum:dbfde3902bbd7d5fa0092bbacc9ba9d6
: end
mantisPIXfirewall#
 
OK - get yourself a syslog server from somewhere and send the logs to it. (C3Deamon was a good syslog, ftp and tftp deamon that was available from 3com a while back)

Check the logs and see the errors, especially looking for denies.

For further info you can run the debug command from the command line and trace the isakmp and crypto traffic looking for errors.
 
hi, thankyou for the tip but i don't have the pix setup for isakmp and crypto traffic.
I have it setup for very basic pptp traffic using the windows pptp client dialer.
Please advice
thankyou
 
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