[c-nsp] cisco ACL filter outbound only

Tim Densmore tdensmore at tarpit.cybermesa.com
Tue Sep 15 12:41:32 EDT 2020


Hi Mike,

Not a Cisco solution, but you might look into a 
pfsense/opnsense/ipfire/whatever appliance - either physical or 
virtual.  Even a UBNT edgerouter can do basic stateful stuff if you have 
one lying around.
All of these are inexpensive and (probably?) do what you need done. The 
first few you can install into a VM to play with by downloading an ISO.  
The edgerouter you'd have to fake with vyos/vyatta.

Tim

On 9/14/20 7:17 PM, Mike wrote:
> Hello,
>
>
>      I have some gear that needs a public ip, but does not have the best
> security profile, and I want to put up an ACL that only permits this
> gear to make outbound connections while dropping all inbound. My router
> is an ASR920 running IOS-XE 03.17.03.S. Does anyone have a simple
> copy/paste acl for this type of job?
>
>
> Thank you.
>
>
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