Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 
Community Member

Pix 501 with cable modem and heart beat service


What would be thebest way to configure a pix 501 to work with a cable modem the ISP provides a heartbeat and authentication service that periodically checks in from PC this is similar to the roadrunner service that run on some cable NW in the states from what i gather the app authenticates to ISP on port 50xxx

If i set the outside interface to Dhcp as no static ip's available and inside to net will I be able to do a static

nat from internal host to outside int or would pat be a better option suggestion appreciated.




Re: Pix 501 with cable modem and heart beat service

I doubt the pix will work in such a configuration - it supports PPPoE, and that is it. There is no support for any proprietary authentication method. If the auth software can be run on an internal pc however, there may be hope - you need to do PAT as you will likely only have one IP address, but you could statically forward the port to an internal machine :

static (inside, outside) tcp interface 5000 5000 netmask

would statically forward tcp port 5000 from the dynamic global ip on the outside of the pix to tcp port 5000 on the inside host

Community Member

Re: Pix 501 with cable modem and heart beat service

In addition to that statement you need an access list that will allow the traffic in.

access-list acl_out permit tcp any any eq 5000

access-group acl_out in interface outside

CreatePlease to create content