Solved

configuring pix 515e for symantec spam appliance

Posted on 2006-10-24
8
485 Views
Last Modified: 2013-11-16
i have a cisco pix 515e that sits in front of a symantec spam 8240 appliance. we need to nat the ip address of the box to a public ip 67.a.b.c which is done - no problem. what we need to do next is nat the virtual interface that is used for sending mail out to the same public ip. the virtual ip address cant accept mail from the outside.
i am looking for advice configuring this on the firewall.
thanks in advance.
0
Comment
Question by:jmcrae72
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 4
  • 4
8 Comments
 
LVL 79

Expert Comment

by:lrmoore
ID: 17799908
OK. Use a static port xlate for inbound email and conditional nat defined with acl for outbound NAT

static (inside,outside) tcp 67.a.b.c smtp 8240PrivateIP smtp netmask 255.255.255.0
global (outside) 10 67.a.b.c
nat (inside) 10 access-list SPAM
access-list SPAM permit ip host <virtual IP> any
0
 

Author Comment

by:jmcrae72
ID: 17800373
static (inside,outside) tcp 67.a.b.c smtp 172.16.1.44 smtp netmask 255.255.255.0 ====> will provide static nat for public to private port 25.

global (outside) 10 67.a.b.c ===> creates a pool of mapped address for nat.

nat (inside) 10 access-list SPAM ===> enables natting on the inside interface for those who meet acl requirments.

access-list SPAM permit ip host 172.16.1.32 any ====> allows virtual ip to be natted.

am i understanding this correctly? i do have other nat commands in place - how will this effect them?
i guess that it will not - do you agree?

thanks!

0
 

Author Comment

by:jmcrae72
ID: 17813371
lrmoore - i havent tried your suggestion yet but i will here in a few - but i did try this. i dont have a dmz yet.

static (inside,outside) 67.a.b.16 172.16.1.44 netmask 255.255.255.255

access-list 100 permit tcp any host 67.a.b.16 eq pop3 ===> on outside int scanning incoming traffic
access-list 100 permit tcp any host 67.a.b.16 eq smtp
access-list 100 permit tcp any host 67.a.b.16 eq www
access-list 100 permit tcp any host 67.a.b.16 eq 995

static (inside,outside) tcp 67.a.b.16 25 172.16.1.32 25 netmask
 255.255.255.255  ==> port forwarding attempt but i get this error "ERROR: duplicate of existing static"

i'll post the results of you suggestion today.

thanks.
0
Visualize your virtual and backup environments

Create well-organized and polished visualizations of your virtual and backup environments when planning VMware vSphere, Microsoft Hyper-V or Veeam deployments. It helps you to gain better visibility and valuable business insights.

 
LVL 79

Accepted Solution

by:
lrmoore earned 500 total points
ID: 17813410
>static (inside,outside) 67.a.b.16 172.16.1.44 netmask
>static (inside,outside) tcp 67.a.b.16 25 172.16.1.32 25 netmask

>error "ERROR: duplicate of existing static"
Correct. You can't do both. That's why you have to do conditional nat with a global and nat w/access-list
0
 

Author Comment

by:jmcrae72
ID: 17814368
lrmoore - looks like it is working. we are sending mail from the correct address. we are doing more test and will confirm later. below i attached your config entry into the PIX.


PIX# conf t
PIX(config)# global (outside) 10 67.a.b.c
Global 67.a.b.c will be Port Address Translated
PIX(config)# nat (inside) 10 access-list SPAM
ERROR: access-list <SPAM> does not exist
ERROR: fail to insert nat entry
PIX(config)# access-list SPAM permit ip host 172.16.1.32 any
PIX(config)# nat (inside) 10 access-list SPAM
PIX(config)#

thanks.
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 17814651
Thanks for the update. Keeping fingers crossed!
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 17830864
Hello?
0
 

Author Comment

by:jmcrae72
ID: 17835736
hello
0

Featured Post

Secure Your Active Directory - April 20, 2017

Active Directory plays a critical role in your company’s IT infrastructure and keeping it secure in today’s hacker-infested world is a must.
Microsoft published 300+ pages of guidance, but who has the time, money, and resources to implement? Register now to find an easier way.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

If you have an ASA5510 then this sort of thing would be better handled with a CSC Module, however on an ASA5505 thats not an option, and if you want to throw in a quick solution to stop your staff going to facebook during work time, then this is the…
Use of TCL script on Cisco devices:  - create file and merge it with running configuration to apply configuration changes
As a trusted technology advisor to your customers you are likely getting the daily question of, ‘should I put this in the cloud?’ As customer demands for cloud services increases, companies will see a shift from traditional buying patterns to new…
Both in life and business – not all partnerships are created equal. Spend 30 short minutes with us to learn:   • Key questions to ask when considering a partnership to accelerate your business into the cloud • Pitfalls and mistakes other partners…

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question