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bnormier
July 11th, 2009, 04:55 PM
We have 2 WANs, and I would like to configure my router to use the non-default WAN for communications with (backups to) S3.

How can I find out which S3 servers my Zmanda Cloud Backup is using? (I need their IP addresses).

Thanks,
Bernard

Nikolas
July 13th, 2009, 10:03 PM
Amazon S3 does not use a fixed IP address, or even a small group of IP addresses, making setting up routes difficult. This is part of Amazon S3's design; it helps provide high availability and spread out the load.

A quick look suggests the following (very large) IP address ranges:
72.21.192.0 - 72.21.223.255 (CIDR: 72.21.192.0/19)
207.171.160.0 - 207.171.191.255 (CIDR: 207.171.160.0/19)
87.238.86.0 - 87.238.87.255 (CIDR: 87.238.86.0/23)
The above list may not be exhaustive and may encomposs other services as well.