topic Re: Redundant ISP Links in Network Security https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901774#M957445 <HTML><HEAD></HEAD><BODY><P>Policy-Based NAT seems to be the answer.</P><P></P><P><A class="jive-link-custom" href="http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807d2874.shtml" target="_blank">http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807d2874.shtml</A></P></BODY></HTML> Thu, 10 Jan 2008 10:13:18 GMT mark.j.hodge 2008-01-10T10:13:18Z Redundant ISP Links https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901773#M957444 <P>I have setup an ASA cluster to use Redundant ISP Links as show in the cisco example</P><P></P><P><A class="jive-link-custom" href="http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806e880b.shtml" target="_blank">http://www.cisco.com/en/US/products/hw/vpndevc/ps2030/products_configuration_example09186a00806e880b.shtml</A></P><P></P><P>This works fine for outbound traffic, i.e. web browsing. However I would like to use it for inbound as well, connecting to a SMTP server. As I understand it there cannot be two static mappings to the same IP address, from the two ISP CIDR ranges. If I place a second IP address on the SMTP server to allow two mappings I cannot determine which address will be used as the source IP for outbound traffic. I believe this will screw up the connection.</P><P></P><P>Any ideas, assitance appreciated.</P> Mon, 11 Mar 2019 11:45:03 GMT https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901773#M957444 mark.j.hodge 2019-03-11T11:45:03Z Re: Redundant ISP Links https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901774#M957445 <HTML><HEAD></HEAD><BODY><P>Policy-Based NAT seems to be the answer.</P><P></P><P><A class="jive-link-custom" href="http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807d2874.shtml" target="_blank">http://www.cisco.com/en/US/products/ps6120/products_configuration_example09186a00807d2874.shtml</A></P></BODY></HTML> Thu, 10 Jan 2008 10:13:18 GMT https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901774#M957445 mark.j.hodge 2008-01-10T10:13:18Z Re: Redundant ISP Links https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901775#M957447 <HTML><HEAD></HEAD><BODY><P>Hi, you need a service called DNS failover, if your primary link is down, your server will be resolved the secondary IP from the other ISP. Here's an exmple ...</P><P><A class="jive-link-custom" href="http://www.dnsmadeeasy.com/s0306/prod/dnsfosm.html" target="_blank">http://www.dnsmadeeasy.com/s0306/prod/dnsfosm.html</A></P></BODY></HTML> Sun, 20 Jan 2008 18:41:43 GMT https://community.cisco.com/t5/network-security/redundant-isp-links/m-p/901775#M957447 pengfang 2008-01-20T18:41:43Z