I would use a commercial box like F5 or radware (sub 10K). If that is not an option, you could use a script that pings a host or hosts and then makes routing changes based on the return. AIX also has a dead gateway detection routine, dunno if this is in Linux. Thank you, Matt Duval Sr. Systems Engineer HealthTrans www.healthtrans.com (720) 493-8252 6061 South Willow Drive Suite 125 Greenwood Village, CO 80111 "Transforming Healthcare, One Transaction At A Time" -----Original Message----- From: Bill.Light@kp.org [mailto:Bill.Light@kp.org] Sent: Tuesday, April 12, 2005 11:17 AM To: suse-security@suse.com Subject: Re: [suse-security] how to do switching between two gateways Hello list, we have two dsl gateways with two DSL lines. One line is used for VPN, the other for the rest. I want to test the availability of both lines and switch routing to the other while line one is not available, and back when everything works again. I have read about heartbeat and linux-ha, it works fine, but not for that purpose. Or did I miss something? How would you do that? Any help appreciated! Thanks! ===================================== Take a look at http://www.lartc.org/ Lots of goodies that address what you want.