<div>
<div class="content wysiwyg-content">
I have a Cisco ASA 5525-X running 8.6(1)2.<br />
<br />
We have utilized all of the IP address space that our ISP initially provided to us. The ISP has assigned an additional non-contiguous block of addresses to us.<br />
<br />
The ASA doesn't support secondary addresses on interfaces. What other options do I have?<br />
<br />
Break the outside interface into sub-interfaces and trunk with dot1q. How would I handle routing with 2 (or more) external interfaces (which to use as default)?<br />
<br />
Set up a second physical outside interface. Again, how to handle routing with 2 (or more external interfaces?<br />
<br />
Other ideas?
</div>
</div>


I have a Cisco ASA 5525-X running 8.6(1)2.

We have utilized all of the IP address space that our ISP initially provided to us. The ISP has assigned an additional non-contiguous block of addresses to us.

The ASA doesn't support secondary addresses on interfaces. What other options do I have?

Break the outside interface into sub-interfaces and trunk with dot1q. How would I handle routing with 2 (or more) external interfaces (which to use as default)?

Set up a second physical outside interface. Again, how to handle routing with 2 (or more external interfaces?

Other ideas?

Cisco ASA 5525-X Add additional IP address space to outside interface

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

Cisco PIX is a dedicated hardware firewall appliance; the Cisco Adaptive Security Appliance (ASA) is a firewall and anti-malware security appliance that provides unified threat management and protection the PIX does not. Other Cisco devices and systems include routers, switches, storage networking, wireless and the software and hardware for PIX Firewall Manager (PFM), PIX Device Manager (PDM) and Adaptive Security Device Manager (ASDM).

Cisco

Network security consists of the policies adopted to prevent and monitor authorized access, misuse, modification, or denial of a computer network and network-accessible resources. Network security involves the authorization of access to data in a network, and covers a variety of computer networks; conducting transactions and communications among businesses, government agencies and individuals. Networks can be private, such as within a company, and others which might be open to public access.