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01.16.2008 at 04:05AM PST, ID: 23086648
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8.2

Site-to-site VPN with NAT on PIX 506e

Asked by jimbobmcgee in Cisco PIX Firewall, Virtual Private Networking (VPN), IPSec Security Protocol

Tags: , ,

I'm trying to establish a VPN tunnel between us and a client, using a PIX 506e.  I'm very new to PIX, having used SOHO routers with nice web interfaces for some time.

Thanks to the impressive foresight of the previous admin, we're on a non-RFC-1918-standard LAN range of 192.14.14.0/24, many of our clients refuse the site connection without some form of NAT (which up to now we have been doing with a string of cheap desktop routers and some per-PC static routes).

I have used the PDM to set up a basic tunnel but now need to ensure all traffic going through that tunnel is translated to either our external static IP (62.xxx.xxx.xxx) or to an RFC-1918 address such as 172.21.3.12, without affected existing VPNs.  

I figured this is what a Policy NAT config is for, so I have tried each of the following:
      static (inside,outside) 172.21.3.12 access-list outside_cryptomap_80
      static (inside,outside) 62.xxx.xxx.xxx access-list outside_cryptomap_80
      static (inside,outside) interface access-list outside_cryptomap_80

but all respond with:
      ERROR: access-list contains deny.

I cannot see any 'deny' settings in my running config (attached), so I'm really stuck as to why I'm getting this error.

Where am I going wrong?

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Building configuration...
: Saved
:
PIX Version 6.3(5)
interface ethernet0 100full
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password 8Ry2YjIyt7RRXU24 encrypted
passwd T6L9kwXy8yD66Ci8 encrypted
hostname my_company-rtr-wl01
domain-name my_company-uk.com
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 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
name 192.15.15.0 my_company_site2
name 10.54.0.0 my_client1
name 192.168.62.0 my_client2
name 198.155.162.64 my_client3
access-list inside_outbound_nat0_acl permit ip 192.14.14.0 255.255.255.0 my_company_site2 255.255.255.0 
access-list inside_outbound_nat0_acl permit ip 192.14.14.0 255.255.255.0 192.14.15.0 255.255.255.0 
access-list inside_outbound_nat0_acl permit ip 192.14.14.0 255.255.255.0 my_client1 255.255.0.0 
access-list inside_outbound_nat0_acl permit ip 192.14.14.0 255.255.255.0 my_client2 255.255.255.0 
access-list inside_outbound_nat0_acl permit ip 192.14.14.0 255.255.255.0 my_client3 255.255.255.252 
access-list outside_cryptomap_20 permit ip 192.14.14.0 255.255.255.0 my_company_site2 255.255.255.0 
access-list my_company-wl_splitTunnelAcl permit ip 192.14.14.0 255.255.255.0 any 
access-list outside_cryptomap_dyn_20 permit ip any 192.14.15.0 255.255.255.0 
access-list outside_cryptomap_40 permit ip 192.14.14.0 255.255.255.0 my_client1 255.255.0.0 
access-list outside_cryptomap_60 permit ip 192.14.14.0 255.255.255.0 my_client2 255.255.255.0 
access-list outside_cryptomap_80 permit ip 192.14.14.0 255.255.255.0 my_client3 255.255.255.252 
access-list outside_access_in permit icmp any any 
pager lines 24
icmp permit any inside
mtu outside 1500
mtu inside 1500
ip address outside 62.xxx.xxx.xxx 255.255.255.128
ip address inside 192.14.14.10 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool ClientPool 192.14.15.1-192.14.15.254
pdm location my_company_site2 255.255.255.0 outside
pdm location 192.14.14.21 255.255.255.255 inside
pdm location my_client1 255.255.0.0 outside
pdm location my_client2 255.255.255.0 outside
pdm location my_client3 255.255.255.252 outside
pdm location 10.1.1.0 255.255.255.0 outside
pdm history enable
arp timeout 14400
global (outside) 10 interface
nat (inside) 0 access-list inside_outbound_nat0_acl
nat (inside) 10 0.0.0.0 0.0.0.0 0 0
static (inside,outside) tcp interface 8001 192.14.14.21 8001 netmask 255.255.255.255 0 0 
access-group outside_access_in in interface outside
route outside 0.0.0.0 0.0.0.0 62.yyy.yyy.yyy 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 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 192.14.14.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
crypto ipsec transform-set ESP-AES-256-MD5 esp-aes-256 esp-md5-hmac 
crypto ipsec transform-set ESP-3DES-MD5 esp-3des esp-md5-hmac 
crypto dynamic-map outside_dyn_map 20 match address outside_cryptomap_dyn_20
crypto dynamic-map outside_dyn_map 20 set transform-set ESP-3DES-MD5
crypto map outside_map 20 ipsec-isakmp
crypto map outside_map 20 match address outside_cryptomap_20
crypto map outside_map 20 set pfs group5
crypto map outside_map 20 set peer 82.aaa.aaa.aaa
crypto map outside_map 20 set transform-set ESP-AES-256-MD5
crypto map outside_map 20 set security-association lifetime seconds 3600 kilobytes 4608000
crypto map outside_map 40 ipsec-isakmp
crypto map outside_map 40 match address outside_cryptomap_40
crypto map outside_map 40 set pfs group2
crypto map outside_map 40 set peer 62.bbb.bbb.bbb
crypto map outside_map 40 set transform-set ESP-3DES-MD5
crypto map outside_map 40 set security-association lifetime seconds 3600 kilobytes 4608000
crypto map outside_map 60 ipsec-isakmp
crypto map outside_map 60 match address outside_cryptomap_60
crypto map outside_map 60 set pfs group2
crypto map outside_map 60 set peer 80.ccc.ccc.ccc
crypto map outside_map 60 set transform-set ESP-3DES-MD5
crypto map outside_map 60 set security-association lifetime seconds 3600 kilobytes 4608000
crypto map outside_map 80 ipsec-isakmp
crypto map outside_map 80 match address outside_cryptomap_80
crypto map outside_map 80 set peer 198.ddd.ddd.ddd
crypto map outside_map 80 set transform-set ESP-3DES-MD5
crypto map outside_map 65535 ipsec-isakmp dynamic outside_dyn_map
crypto map outside_map client authentication LOCAL 
crypto map outside_map interface outside
isakmp enable outside
isakmp key ******** address 82.aaa.aaa.aaa netmask 255.255.255.255 no-xauth no-config-mode 
isakmp key ******** address 62.bbb.bbb.bbb netmask 255.255.255.255 no-xauth no-config-mode 
isakmp key ******** address 80.ccc.ccc.ccc netmask 255.255.255.255 no-xauth no-config-mode 
isakmp key ******** address 198.ddd.ddd.ddd netmask 255.255.255.255 no-xauth no-config-mode 
isakmp identity address
isakmp policy 20 authentication pre-share
isakmp policy 20 encryption aes-256
isakmp policy 20 hash md5
isakmp policy 20 group 5
isakmp policy 20 lifetime 28800
isakmp policy 40 authentication pre-share
isakmp policy 40 encryption 3des
isakmp policy 40 hash md5
isakmp policy 40 group 2
isakmp policy 40 lifetime 28800
isakmp policy 60 authentication pre-share
isakmp policy 60 encryption 3des
isakmp policy 60 hash md5
isakmp policy 60 group 1
isakmp policy 60 lifetime 86400
vpngroup my_company-wl address-pool ClientPool
vpngroup my_company-wl dns-server 192.14.14.20 192.14.14.22
vpngroup my_company-wl default-domain my_company-uk.com
vpngroup my_company-wl split-tunnel my_company-wl_splitTunnelAcl
vpngroup my_company-wl idle-time 1800
vpngroup my_company-wl password ********
telnet 192.14.14.0 255.255.255.0 inside
telnet timeout 20
ssh timeout 5
console timeout 0
username my_company01 password NGR56dPW.MjoEa1O encrypted privilege 15
terminal width 80
Cryptochecksum:7c04a2ec348d5328f7d3be7f2b5865f2
: end
[OK]
 
Keywords: Site-to-site VPN with NAT on PIX 5…
Title
1 Pix to Pix VPN
2 VPN to pix 506e NAT issue
3 Cisco PIX  VPN and NAT
4 Configuring a Remote VPN to PIX Versi…
5 pix VPN
6 How to configure PIX 515E for VPN …
 
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[+][-]01.16.2008 at 04:36AM PST, ID: 20671185

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[+][-]01.16.2008 at 07:40AM PST, ID: 20672766

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[+][-]01.17.2008 at 04:52AM PST, ID: 20680667

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About this solution

Zones: Cisco PIX Firewall, Virtual Private Networking (VPN), IPSec Security Protocol
Tags: Cisco, PIX, 506e
Sign Up Now!
Solution Provided By: jimbobmcgee
Participating Experts: 1
Solution Grade: A
 
 
 
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