I have a PIX 506E (PIXOS 6.2(2) ) with a single routeable static IP address (10.20.30.123 in config below) using PAT to translate internal traffic to the outside interface. From home I access the internal network via VPN (split-tunnel arrangement using Cisco VPN Client 3.6) in order to get mail from the internal mail server (working well).
I want to have all traffic to smtp port 25 directed to an internal mail server (192.168.0.22 in config below).
When I try to add a translation rule to redirect port 25 (smtp) from my outside interface ip to my internal mail server (server1) I get the following error message (using PDM 2.0(2)):
"host outside 10.20.30.123 is derived from the IP address of interface outside. You cannot specify translation rule for it"
I instead tried to add an Access Rule to allow traffic from port 25 of the external interface to the internal mail server, and I got the following error:
"No static Network Address Translation (NAT) rule is configured for the destination host or network on interface outside. Would you like to add a static NAT rule for the host or network now?"
QUESTION: How can I redirect all port 25 traffic from my static ip address (which is also the outside interface) to my internal mail server?
Config listing attached at end. All help appreciated!
Config listing (critical addresses, passwords etc removed):
PIX Version 6.2(2)
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password xxxxxxxxxxxxxxxxxxxx encrypted
passwd xxxxxxxxxxxxxxxxxxxx encrypted
hostname gateway_hostname
domain-name domainname.com
clock timezone CST -6
clock summer-time CDT recurring 1 Sun Apr 2:00 last Sun Oct 3:00
fixup protocol ftp 21
fixup protocol http 80
fixup protocol h323 h225 1720
fixup protocol h323 ras 1718-1719
fixup protocol ils 389
fixup protocol rsh 514
fixup protocol rtsp 554
fixup protocol smtp 25
fixup protocol sqlnet 1521
fixup protocol sip 5060
fixup protocol skinny 2000
names
name 10.20.30.0 outside-net
name 192.168.0.0 inside-net
name 10.1.2.0 vpnip-net
name 192.168.0.22 server1
access-list nonatinside permit ip inside-net 255.255.255.0 vpnip-net 255.255.255.0
access-list splittun permit ip inside-net 255.255.255.0 vpnip-net 255.255.255.0
pager lines 24
logging on
logging timestamp
logging trap notifications
logging history warnings
interface ethernet0 10baset
interface ethernet1 10full
icmp permit any inside
mtu outside 1500
mtu inside 1500
ip address outside 10.20.30.123 255.255.255.0
ip address inside 192.168.0.1 255.255.255.0
ip audit info action alarm
ip audit attack action alarm
ip local pool ippool 10.1.2.1-10.1.2.254
pdm location server1 255.255.255.255 inside
pdm logging informational 500
pdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 0 access-list nonatinside
nat (inside) 1 0.0.0.0 0.0.0.0 0 0
route outside 0.0.0.0 0.0.0.0 10.20.30.1 1
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 rpc 0:10:00 h323 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 partnerauth protocol radius
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
sysopt connection permit-ipsec
no sysopt route dnat
crypto ipsec transform-set myset esp-3des esp-md5-hmac
crypto dynamic-map dynmap 10 set transform-set myset
crypto map mymap 10 ipsec-isakmp dynamic dynmap
crypto map mymap client authentication partnerauth
crypto map mymap interface outside
isakmp enable outside
isakmp policy 10 authentication pre-share
isakmp policy 10 encryption 3des
isakmp policy 10 hash md5
isakmp policy 10 group 2
isakmp policy 10 lifetime 86400
vpngroup vpngroup1 address-pool ippool
vpngroup vpngroup1 dns-server server1 1.2.3.4
vpngroup vpngroup1 wins-server server1
vpngroup vpngroup1 default-domain domainname.com
vpngroup vpngroup1 split-tunnel splittun
vpngroup vpngroup1 idle-time 1800
vpngroup vpngroup1 password vvvvvvvvvvvvvvvvvv
telnet timeout 5
ssh timeout 5
terminal width 80
: end
