Confuguring PIX 506 to allow exchange server to recieve mail

>>How do I allow the server to recieve mail from outside on the pix

providing you have an "inbound" access list, and that access list has been applied to the outside interface then you need to allow port 25 (TCP) traffic inbound from your mail relay or ISP.

eg
access-list inbound permit tcp any host <ip of web server> eq 25
access-group inbound in interface outside

>>I also need to map a public ip and a private ip inside the network for the mail server. what command do I use?

eg
static (inside,outside) <inside IP> <outside IP>


NOTE the above presumes your interfaces are called the default (inside and outside)

 
access-list 101 permit tcp any host 209.168.202.5 eq 3389
  access-group 101 in interface outside

ignore the last two lines! I was copy pasting them for the syntax!!

I have set up the following configure on the pix but still I cannot recieve mail through my exchange server. see line below.


:
PIX Version 6.3(3)
interface ethernet0 auto
interface ethernet1 auto
nameif ethernet0 outside security0
nameif ethernet1 inside security100
enable password IjYYaPVgGm0.lJB0 encrypted
passwd IjYYaPVgGm0.lJB0 encrypted
hostname kpmglsk
domain-name kpmg.co.zm
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
access-list inside permit tcp any any eq domain
access-list inside permit udp any any eq domain
access-list inside permit tcp any any eq ftp
access-list inside permit tcp any any eq ftp-data
access-list inside permit tcp any any eq https
access-list inside permit tcp any any eq ssh
access-list inside permit tcp any any eq pop3
access-list inside permit tcp any any eq www
access-list inside permit icmp any any
access-list inside permit tcp any any eq telnet
access-list inside permit tcp any host 62.56.217.67 eq smtp
access-list outside permit icmp any any
access-list outside permit tcp any any eq smtp
access-list outside permit tcp any any eq pop3
access-list outside permit tcp any any eq www
pager lines 24
mtu outside 1500
mtu inside 1500
ip address outside 62.56.216.67 255.255.255.240
ip address inside 192.168.0.3 255.255.255.0
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) 192.168.0.1 62.56.216.67 netmask 255.255.255.255 0 0
access-group inside in interface inside
route outside 0.0.0.0 0.0.0.0 62.56.216.1 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
http server enable
http 192.168.0.0 255.255.255.0 inside
no snmp-server location
no snmp-server contact
snmp-server community public
no snmp-server enable traps
floodguard enable
telnet 192.168.0.0 255.255.255.0 inside
telnet timeout 5
ssh timeout 5
console timeout 0
dhcpd address 192.168.0.5-192.168.0.254 inside
dhcpd dns 192.168.0.1
dhcpd wins 192.168.0.1
dhcpd lease 3600
dhcpd ping_timeout 750
dhcpd domain kpmg.co.zm
dhcpd auto_config outside
dhcpd enable inside
terminal width 80
Cryptochecksum:3d519618ab3d1774105885d6c99458f4
: end

you havnt applied the "outside" access list to the outside interface

 access-group outside in interface outside

Hi Peter

Does a pix alllow telnet on the outiside interface. If yes what is the command. I would like to telnet a remote pix

well I dont recommend doing so as its better policy to do it from inside, but

telnet <ip address> 255.255.255.255 outside

Hi Irmoore

I have made the changes as advised but no mail coming through. I am able to browse the internet without doing any static an you indicated.

my mail server was also doing nat and routing with two interfaces. Do I need to disable routing on my my windows 2003 server which is also running exchange. My mail does not know which interface to use since the server is using two interfaces one for public interconnection the other LAN

advise
   

Yes, you should most definately disable routing on the server and disable one interface.

pop3 mail is not flowing what other command do I need to enter on the pix to allow this. I already have an access list allowing this

pop mail runs over TCP port 110 (providing its not secure pop mail)

>>No. You cannot telnet to the outside interface of the pix

Thanks lrmoore  I was unaware of that - my appologies anyirongo my earlier post was incorrect.

Pete

This config line should take care of your pop3 requirement
       static (inside,outside) tcp interface 110 192.168.0.1 110 netmask 255.255.255.255

Look at result of "show static" and make sure that port 110 is mapped
Can you post result of "show access-list"

# sh access-list
access-list cached ACL log flows: total 0, denied 0 (deny-flow-max 1024)
            alert-interval 300
access-list inside; 11 elements
access-list inside line 1 permit tcp any any eq domain (hitcnt=0)
access-list inside line 2 permit udp any any eq domain (hitcnt=0)
access-list inside line 3 permit tcp any any eq ftp (hitcnt=0)
access-list inside line 4 permit tcp any any eq ftp-data (hitcnt=0)
access-list inside line 5 permit tcp any any eq https (hitcnt=0)
access-list inside line 6 permit tcp any any eq ssh (hitcnt=0)
access-list inside line 7 permit tcp any any eq pop3 (hitcnt=0)
access-list inside line 8 permit tcp any any eq www (hitcnt=0)
access-list inside line 9 permit icmp any any (hitcnt=0)
access-list inside line 10 permit tcp any any eq telnet (hitcnt=0)
access-list inside line 11 permit tcp any host 62.56.217.67 eq smtp (hitcnt=0)
access-list outside; 4 elements
access-list outside line 1 permit icmp any any (hitcnt=0)
access-list outside line 2 permit tcp any any eq smtp (hitcnt=0)
access-list outside line 3 permit tcp any any eq pop3 (hitcnt=0)
access-list outside line 4 permit tcp any any eq www (hitcnt=0)
#

please advise

It does not appear that you have the outside acl applied to the interface.

Do this:
  access-group outside in interface outside

I have this access-group comand

This is the only one that is in the config that you posted:
   >access-group inside in interface inside

Try removing the access-list from the inside interface
    no access-group inside in interface inside

and just have the outside group applied.
   access-group outside in interface outsdie

Pop3 cannot go out. What command on the firewall allows pop3 mail to walk in and out

does it require also a static route.

this one is not working

     static (inside,outside) tcp interface 110 192.168.0.1 110 netmask 255.255.255.255

Where is the POP3 server? Is it your local server?
Where is the POP3 client? Outside the network or inside the LAN?
Are you trying to go to a FQDN (i.e.  pop3.yourdomain.com ) with the POP3 client?
If yes, does that fqdn resolve to 192.168.0.1 or to 62.56.216.67 ?
If no, what IP address are you trying to use in the POP3 client server settings?

the pop3  server is at the ISP outside the LAN
the pop3 clients are inside the lan configured to pick mail from the pop3 servers at the ISP
some are using only pop3 addresses others are combining exchange mail and pop3 mail
the FQDN resolves to both 192.168.0.1

the pop3 clients use mail references provided by the isp. the server nats the local IP to the public ip 62.56.216.67

I think I get it...but I may still be confused (not difficult at my age)..

Try removing the access-list from the inside interface
    no access-group inside in interface inside

POP3 server at ISP. Client setup, servers tab, pop3 server = pop3.yourisp.com
   pop3.yourisp.com resolves to an ISP public IP - NOT 192,168.0.1, NOT 62.56.216.67 ?

>the server nats the local IP to the public ip 62.56.216.67
This is the part that confuses me. The PIX is doing the NAT translation from the private client IP to the public ip of 62.56.216.67.

Irmoore any help!

I have set the commands for a VPN on the two PIX 506 firewalls but they are not talking communicating.
What do I do to check what is the problem?

The comands I entered on both firewalls are below (with different IPs on the other firewall)

Please advise


isakmp enable outside
isakmp policy 1 authentication pre-share
isakmp policy 1 encryption des
isakmp policy 1 hash md5
isakmp policy 1 group 1
isakmp policy 1 lifetime 1000

isakmp key ********** address 62.56.216.67 netmask 255.255.255.255

access-list 101 permit ip 192.168.1.0 255.255.255.0 192.168.0.0 255.255.255.0

crypto ipsec transform-set kitwe esp-des esp-md5-hmac


crypto map zambo 1 ipsec-isakmp
crypto map zambo 1 match address 101
crypto map zambo 1 set peer 62.56.216.67
crypto map zambo 1 set transform-set kitwe

crypto map zambo interface outside

nat (inside) 0 access-list 101

sysopt connection permit-ipsec

isakmp identity address

Do you want to open another question to deal with the VPN tunnel?
Have we fixed the POP3 problem?

yes give me a push on the VPN than we can go back to the pop3. The VPN is now urgent. Sorry for this