Snort mailing list archives
Re: How To Mirror/Monitor T1 and VPN Traffic w/Cisco Routers?
From: Matt Kettler <mkettler () evi-inc com>
Date: Mon, 04 Oct 2004 14:27:32 -0400
At 11:09 AM 10/4/2004, McCash, John wrote:
Is there a way to have a router span or mirror traffic to another interface the same way that a switch can? Or can it somehow directly copy the datastream to somewhere else on the LAN?
AFAIK the cisco IOS routers do not have any ability to do this.Unlike a switch, where copying a packet to multiple ports is a matter of normal behavior, a router doesn't have the hardware to support this multi-copy behavior. It's also much easier to do mulit-destination when all your ports are the same kind of hardware and don't require different link-layer controls.
If your model does support it, it will likely be configured with the same span commands as in their switches (monitor session). It may also be restricted to doing this between like types of interfaces. I'd be highly surprised (and impressed) if cisco IOS supported mirroring traffic from a T1 to an ethernet card.
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Current thread:
- How To Mirror/Monitor T1 and VPN Traffic w/Cisco Routers? McCash, John (Oct 04)
- Message not available
- Re: How To Mirror/Monitor T1 and VPN Traffic w/Cisco Routers? Matt Kettler (Oct 04)
- Re: How To Mirror/Monitor T1 and VPN Traffic w/Cisco Routers? twig les (Oct 04)
- Re: How To Mirror/Monitor T1 and VPN Traffic w/Cisco Routers? Matt Kettler (Oct 04)
- Message not available