I have a very interesting problem. I have a new 1800 configured via the SDM to route out fasteth 0 with just the default single vlan in place. Service is 5Mbps wireless over radio-link.
After trying to join a webinar after installing this router, I was informed that the required Webex client would take upwards of 90 minutes to download via https.
We recently switched ISP and upgraded equipment so I had lots to troubleshoot, but on a hunch used an available public IP and plugged my PC directly into the internet, bypassing the router. Webex Client loaded and configured in under 2 minutes!
So, router was somehow involved. Poking around I noticed HTTPS inspection turned on under Application Security.
Again on a hunch, I turned this off and webex clients were loading in 1-2 minutes.
I basically have a simple firewall set up blocking certain ports for all users (forcing use of a proxy) except a group of privileged users that have unrestricted access via an exception in the firewall based on their internal static IP.
My question is this: is it normal for https inspection to take such a huge performance hit (90x slower), or is there some unwanted configuration relationship between firewalling and App Security in the SDM that can cause inefficient rules to get created.
I confess I'm not well versed in the IOS.
Any ideas on how to troubleshoot the cause of the slowdown?
I turned off https inspection as a stopgap.