I need to use my PIX 506E as a PPTP VPN server with authentication aginst my Active Directory intrigrated RAIDUS server (Windows IAS). Below is my configuration that is currently working:
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PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password ###### encrypted
passwd ###### encrypted
hostname ######
domain-name ######
clock timezone EST -5
fixup protocol dns
fixup protocol ftp 21
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol http 80
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
no fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
<!-- OBJECT GROUP CUT -->
<!-- ACCESS LIST CUT -->
pager lines 24
logging on
logging timestamp
logging trap debugging
logging device-id string ######
logging host inside 10.17.1.91 17/1025
mtu outside 1500
mtu inside 1500
ip address outside ###### 255.255.255.192
ip address inside 10.17.1.1 255.255.0.0
ip audit info action alarm
ip audit attack action alarm
ip local pool vpnpool 10.18.0.1-10.18.0.254
pdm logging informational 100
pdm history enable
arp timeout 14400
global (outside) 1 interface
<!-- STATIC STATEMENTS CUT -->
nat (inside) 0 access-list vpn
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
access-group outside in interface outside
access-group inside in interface inside
route outside 0.0.0.0 0.0.0.0 ###### 1
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
aaa-server AuthInbound protocol radius
aaa-server AuthInbound (inside) host 10.17.1.5 ###### timeout 5
no snmp-server location
no snmp-server contact
snmp-server community ######
no snmp-server enable traps
floodguard enable
sysopt connection permit-pptp
sysopt noproxyarp inside
telnet timeout 5
ssh 0.0.0.0 0.0.0.0 inside
ssh timeout 30
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 ppp encryption mppe 128
vpdn group 1 client configuration address local vpnpool
vpdn group 1 client authentication aaa AuthInbound
vpdn group 1 pptp echo 60
vpdn enable outside
terminal width 80
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I am able to connect to the PPTP VPN just fine with my domain login, but when I do, anytime traffic is passed I see the CPU utilization of the PIX go up to and stay at 100%. I have tried with both PPTP fixup protocol on and off, it does it either way. What is going on?
