Describes how outbound traffic from a Cloud Network works in MCP 1.0, including Public IP Traffic, Private IP traffic, and Global SNAT address translation technology in place between data centers.
NOTE: This article applies only to MCP 1.0 locations. For details on MCP 2.0 behavior, see Introduction to Routing, Network Domain Static Routes, and SNAT in MCP 2.0 Locations.
TRAFFIC DESTINED FOR PUBLIC INTERNET
By default, Cloud Networks have a SNAT (Source NAT) set up for outbound traffic so that traffic destined for any public IP address uses a single public IP address associated with that network. You can identify this IP address by connecting to http://whatismyipaddress.com from a server inside the network.
You can change this behavior by setting up a NAT that maps your server's private IP address to a single public IP address. In that case, the server NAT will take precedence and all traffic from that private IP address will route using the public IP address established by the NAT. For instructions on how to set up a NAT, see the instructions at How to Create a NAT Rule on a Network or Network Domain
TRAFFIC DESTINED FOR PUBLIC IP ADDRESSES OF CLOUD NETWORKS
Traffic destined for a public IP addresses associated with a Cloud Networks work the same as traffic destined for the public Internet with one exception. The exception involves traffic destined for a public IP addresses bound to the same Cloud Network. In those cases, the behavior depends on the nature of the public IP address:
TRAFFIC DESTINED FOR CLOUD NETWORK PRIVATE IP ADDRESS SPACE
Traffic between private IP addresses on different Cloud Networks is routable by default, even if the Cloud Networks are owned by different clients. Such traffic works differently than traffic destined for Public IP addresses:
NOTE: For networks deployed prior to September 29, 2010, the notes listed above about private IP traffic do NOT apply. Instead, the default behavior is identical to traffic destined for the Public Internet as described above. That means the traffic leaves the network as public traffic and is neither encrypted or accelerated. If you need to know whether you deployed a specific network prior to this date, contact Support and we will verify for you.
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