https://efb97021.aww-3cz.pages.dev/tags/arp/ Recent content in Arp on Aaron's Worthless Words Hugo en Fri, 11 Sep 2009 00:00:00 +0000 https://efb97021.aww-3cz.pages.dev/posts/2009/09/asa-and-proxy-arp/ Fri, 11 Sep 2009 00:00:00 +0000 https://efb97021.aww-3cz.pages.dev/posts/2009/09/asa-and-proxy-arp/ <p>Wow.  A new entry.  Everyone sit down before you pass out.</p> <p>I&rsquo;ve got a real-world example for you today.  We have an ASA 5540 installed at a business unit with interfaces in multiple networks, including one containing the production servers and another containing the accounting servers.  The production network sits on a 7600 that&rsquo;s not ours, so, to avoid IP conflicts, we are statically NATting connections into that network.  The 7600 has with many, many VLANs, and, since the firewall production servers are on different VLANs, there&rsquo;s an interface VLAN between us.  Sounds pretty straightforward, but it just wasn&rsquo;t working when we try to connect between the interfaces.</p>