Re: NAT a range of TCP ports to an internal IP address onpix 506E

["Fetch, Brandon" <bfetch () tpg com>]

More specifically - you're inbound NAT already encompasses port 80; the
new one is a one-for-one NAT instead of more-specific ports.

The added static must be:

static (inside,outside) tcp x.x.x.x VoIP-port1 192.168.1.6 VoIP-port1
netmask 255.255.255.255 0 0
static (inside,outside) tcp x.x.x.x VoIP-port2 192.168.1.6 VoIP-port2
netmask 255.255.255.255 0 0
static (inside,outside) tcp x.x.x.x VoIP-port3 192.168.1.6 VoIP-port3
netmask 255.255.255.255 0 0
....

You can cheat/easily manage this better by creating an object-group; you
can create one for protocols, networks, or services (IP ports).

If you create an "object-group service" and specify your VoIP ports (TCP
or UDP), your static could be one line instead of 62:

static (inside,outside) tcp x.x.x.x object-group VoIP-Group 192.168.1.6
VoIP-Group netmask 255.255.255.255 0 0

This makes management easier since you don't have to input 62 lines of
static configurations with the equivalent inbound ACL changes as well
(you can use object-groups as part of any configuration task).

HTH,
Brandon

-----Original Message-----
From: firewall-wizards-bounces () listserv icsalabs com
[mailto:firewall-wizards-bounces () listserv icsalabs com] On Behalf Of
kevin horvath
Sent: Thursday, January 24, 2008 9:18 PM
To: Firewall Wizards Security Mailing List
Subject: Re: [fw-wiz] NAT a range of TCP ports to an internal IP address
onpix 506E

you already have a translation.  Do a "sh nat" and see where the
conflict is and then remove or modify the translations.

On Jan 23, 2008 1:50 PM, Chris Smith <chris.smith () 1pointe com> wrote:
> Best regards firewall list readers!
>
> We have a Cisco pix 506E running software version 6.3 (5)
>
> We also have a VOIP server on the internal network at 192.168.1.6. We
need to NAT a range of TCP ports to this VOIP server. The port range is
49152 through 49214.
> The connections come in from the internet and need to be natted
through the pix to this internal VOIP server.
> We believe we already have the access list rules in place to allow the
connections. We just need a translation rule to allow this group of
ports.
> The IP address of the internal interface on the pix is 192.168.1.2
>
> The command that is not working is:
>
> static (inside,outside) x.x.x.x 192.168.1.6
>
> We are currently getting this error when trying to setup the rule.
>
> WARNING: mapped-address conflict with existing static
>     tcp from inside:server/80 to outside:x.x.x.x/80 netmask
255.255.255.2
> 55
> WARNING: mapped-address conflict with existing static
>     tcp from inside:server/25 to outside:x.x.x.x/25 netmask
255.255.255.2
> 55
> WARNING: mapped-address conflict with existing static
>     tcp from inside:server/110 to outside:x.x.x.x/110 netmask
255.255.255
> .255
>
> Any insight is appreciated.
> Thanks to all.
> _______________________________________________
> firewall-wizards mailing list
> firewall-wizards () listserv icsalabs com
> https://listserv.icsalabs.com/mailman/listinfo/firewall-wizards
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