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I have site-to-site VPNs setup on my Cisco PIX. &nbsp;<br />
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I'd like to know how much of my overall traffic going out the &quot;outside&quot; interface is destined for the site-to-site VPNs. &nbsp;<br />
<br />
How can I monitor that information?
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I have site-to-site VPNs setup on my Cisco PIX.  

I'd like to know how much of my overall traffic going out the "outside" interface is destined for the site-to-site VPNs.  

How can I monitor that information?

Monitor VPN traffic on Cisco PIX 535 for site-to-site VPNs

Software firewalls, also known as host-based firewalls, provide a layer of software on one host that controls network traffic in and out of that single machine. Most operating systems now include firewall software, but many available software firewalls include central distribution, antivirus systems and disaster recovery.

Software 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).