ASA 5505 SMTP Port Forward

[Millwall21]

Hi,

Have been playing or trying to with NAT/PAT to get SMTP forwarded to our internal server to no success. I must be missing something???

***************

: Saved
:
ASA Version 7.2(2)
!
hostname xxxx
domain-name xxxx.co.uk
enable password xxxxx encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 10.1.1.247 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address x.x.x.189 255.255.255.248
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd xxxxxxx encrypted
ftp mode passive
dns server-group DefaultDNS
domain-name xxxxxx
access-list inside_access_in extended permit icmp any any
access-list inside_access_in extended permit ip any any
access-list outside_access_in extended permit icmp any any
access-list outside_access_in extended permit tcp any host x.x.x.189 eq smtp
access-list outside_access_in extended permit tcp any host x.x.x.189 eq www
access-list outside_access_in extended permit tcp any host x.x.x.189 eq https
pager lines 24
logging asdm informational
mtu outside 1500
mtu inside 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-522.bin
no asdm history enable
arp timeout 14400
global (outside) 1 x.x.x.188
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) 10.1.1.249 x.x.x.189 netmask 255.255.255.255
access-group outside_access_in in interface outside
access-group inside_access_in in interface inside
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
http server enable
http 10.1.1.0 255.255.255.0 inside
http 10.1.254.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
telnet timeout 5
ssh timeout 5
console timeout 0

!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:507f35201638526556544c09074b7364
: end
asdm image disk0:/asdm-522.bin
no asdm history enable

****************************************

Probably something simple?

Thanks,
Paul

 

[Supergrrover]

Can anything get out of the pix? You are missing the route statement
route outside 0.0.0.0 0.0.0.0 [GATEWAY_IP]

If that doesn't do it, I have a problem with the pix when you use the IP of the interface and not using the interface keyword in the static and the ACL. It was only with one version on the PIX OS but I can't remember which one. (7.1 or something )

Remove this
access-group inside_access_in in interface inside
It isn't doing anything - everything is allowed out by default.



Brent
Systems Engineer / Consultant
CCNP, CCSP

 

[brianinms]

In addition your static is backwards

static (inside,outside) 10.1.1.249 x.x.x.189 netmask 255.255.255.255


It should be

static (inside,outside) x.x.x.189 10.1.1.249 netmask 255.255.255.255


The issue the command

clear xlate

 

[Millwall21]

Thanks for the assistance so far but I still can't get access from the outside to anything inside?

My config is now as follows, I can get access out from the asa to anything. So it must be configuration somewhere??

: Saved
:
ASA Version 7.2(2)
!
hostname xxx
domain-name xxxx
enable password xxxx encrypted
names
!
interface Vlan1
nameif inside
security-level 100
ip address 10.1.1.247 255.255.255.0
!
interface Vlan2
nameif outside
security-level 0
ip address x.x.x.189 255.255.255.248
!
interface Vlan3
shutdown
no forward interface Vlan1
nameif dmz
security-level 50
no ip address
!
interface Ethernet0/0
switchport access vlan 2
!
interface Ethernet0/1
!
interface Ethernet0/2
!
interface Ethernet0/3
!
interface Ethernet0/4
!
interface Ethernet0/5
!
interface Ethernet0/6
!
interface Ethernet0/7
!
passwd xxxxx encrypted
ftp mode passive
dns server-group DefaultDNS
domain-name xxxxxx
same-security-traffic permit intra-interface
access-list outside_access_in extended permit tcp any host x.x.x.189 eq smtp
access-list outside_access_in extended permit tcp any host x.x.x.189 eq www
access-list outside_access_in extended permit tcp any host x.x.x.189 eq https
access-list outside_access_in extended permit tcp any host x.x.x.189 eq imap4
access-list outside_access_in extended permit icmp any any
access-list inside_access_in extended permit icmp any any
access-list inside_access_in extended permit ip any any
pager lines 24
logging asdm informational
mtu inside 1500
mtu outside 1500
mtu dmz 1500
icmp unreachable rate-limit 1 burst-size 1
asdm image disk0:/asdm-522.bin
no asdm history enable
arp timeout 14400
global (outside) 1 interface
nat (inside) 1 0.0.0.0 0.0.0.0
static (inside,outside) x.x.x.189 10.1.1.249 netmask 255.255.255.255 dns tcp 0 120
access-group inside_access_in in interface inside
access-group outside_access_in in interface outside
timeout xlate 3:00:00
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout uauth 0:05:00 absolute
http server enable
http 10.1.1.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart
telnet timeout 5
ssh timeout 5
console timeout 0

!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect rsh
inspect rtsp
inspect esmtp
inspect sqlnet
inspect skinny
inspect sunrpc
inspect xdmcp
inspect sip
inspect netbios
inspect tftp
!
service-policy global_policy global
prompt hostname context
Cryptochecksum:2462305ae7be8e55b92e3dc24b625be9
: end
asdm image disk0:/asdm-522.bin
no asdm history enable

I think it must be an access rule somewhere, but what have I missed?

Thanks,
Paul

 

[GM2005]

Read superggrover. That IS the problem.

 

[Millwall21]

Yep open my eyes and read properly.

It was the case that it needed the interface name rather than the ip address, changed it to "outside" rather than the ip and bob's your uncle.

For ref as you will see I have version 7.2(2)