We have a client that uses Cisco VPN client to regularly establish an IPSEC VPN connection to a remote location. It worked fine until we recently replaced our firewall with a PIX 506e. The client establishes a connection but no traffic will pass through the VPN - they can't ping anything on the remote network. From the research I've done, this seems to be a common problem and does not work by default when you're behind a PIX. But I haven't found a clear answer how to fix and the things I've tried haven't worked. I currently have no control of the remote PIX and I don't know the version of the Cisco Client they're using yet. This user only comes once a week and brings their own laptop. I'm just supposed to get this working as soon as possible. Here is my current PIX config:
PIX Version 6.3(5)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password **** encrypted
passwd **** encrypted
hostname pixfirewall
fixup protocol dns maximum-length 512
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
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol tftp 69
names
access-list INBOUND permit tcp any interface outside eq pptp
access-list INBOUND permit tcp any interface outside eq 3389
pager lines 24
icmp deny any outside
icmp permit any inside
mtu outside 1500
mtu inside 1500
ip address outside x.x.x.x 255.255.255.240
ip address inside 192.168.248.254 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
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
static (inside,outside) tcp interface pptp 192.168.248.240 pptp netmask 255.255.255.255 0 0
static (inside,outside) tcp interface 3389 192.168.248.240 3389 netmask 255.255.255.255 0 0
access-group INBOUND in interface outside
route outside 0.0.0.0 0.0.0.0 x.x.x.x 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 sip-disconnect 0:02:00 sip-invite 0:03:00
timeout uauth 0:05:00 absolute
aaa-server TACACS+ protocol tacacs+
aaa-server TACACS+ max-failed-attempts 3
aaa-server TACACS+ deadtime 10
aaa-server RADIUS protocol radius
aaa-server RADIUS max-failed-attempts 3
aaa-server RADIUS deadtime 10
aaa-server LOCAL protocol local
http server enable
http 192.168.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 192.168.248.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
terminal width 80
Cryptochecksum:****
Some have made the suggestion to add:
fixup protocol esp-ike
isakmp nat-traversal 30
I tried that but it didn't make any difference. Someone else said to allow UDP 4500, but I would like some definate answers before I go changing anything else. Could someone please tell me the lines I need to add or what I need to do to make this work?
Thanks in advance.
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