Network requirements
To prepare your network for running AWS Application Migration Service, you need to set the following connectivity settings:
Note
All communication is encrypted with TLS.
Topics
- Communication over TCP port 443
- Communication between the source servers and AWS Application Migration Service over TCP port 443
- Communication between the staging area subnet and AWS Application Migration Service over TCP port 443
- Communication between the source servers and the staging area subnet over TCP port 1500
Communication over TCP port 443
Add the following IP addresses and URLs to your firewall:
The AWS Application Migration Service Region-specific console address:
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(mgn.<region>.amazonaws.com example: mgn.eu-west-1.amazonaws.com)
Amazon S3 service URLs (required for downloading AWS Application Migration Service software)
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The AWS Replication Agent installer should have access to the S3 bucket URL of the AWS Region you are using with AWS Application Migration Service.
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The staging area subnet should have access to S3.
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The following S3 buckets should be allowlisted:
https://aws-mgn-clients-<REGION>.s3.<REGION>.amazonaws.com/ https://aws-mgn-clients-hashes-<REGION>.s3.<REGION>.amazonaws.com/ https://aws-mgn-internal-<REGION>.s3.<REGION>.amazonaws.com/ https://aws-mgn-internal-hashes-<REGION>.s3.<REGION>.amazonaws.com/ https://aws-application-migration-service-<REGION>.s3.<REGION>.amazonaws.com/ https://aws-application-migration-service-hashes-<REGION>.s3.<REGION>.amazonaws.com/ https://amazon-ssm-<REGION>.s3.<REGION>.amazonaws.com/
Note
Agent installation and replication server components require S3 bucket for service functionality.
If you use an Amazon S3 VPC Endpoint, you must provide sufficient permissions for service functionality. See the following example policy for replicating to us-east-1:
{ "Version": "2008-10-17", "Statement": [ { "Effect": "Allow", "Principal": { "AWS": "*" }, "Action": "s3:GetObject", "Resource": [ "arn:aws:s3:::aws-mgn-clients-us-east-1/*", "arn:aws:s3:::aws-mgn-clients-hashes-us-east-1/*", "arn:aws:s3:::aws-mgn-clients-us-east-1/*", "arn:aws:s3:::aws-mgn-clients-us-east-1/*", "arn:aws:s3:::aws-mgn-clients-hashes-us-east-1/*", "arn:aws:s3:::aws-mgn-internal-us-east-1/*", "arn:aws:s3:::aws-mgn-internal-hashes-us-east-1/*", "arn:aws:s3:::aws-application-migration-service-us-east-1/*", "arn:aws:s3:::aws-application-migration-service-hashes-us-east-1/*", "arn:aws:s3:::amazon-ssm-us-east-1/*" ] } ] }
AWS specific
The staging area subnet requires outbound access to the EC2 endpoint of its AWS Region.
TCP port 443 is used for two communication routes:
1. Between the source servers and AWS Application Migration Service.
2. Between the staging area subnet and AWS Application Migration Service.
Communication between the source servers and AWS Application Migration Service over TCP port 443
Each source server that is added to AWS Application Migration Service (AWS MGN) must continuously communicate with AWS MGN (mgn.<region>.amazonaws.com) over TCP port 443.
The following are the main operations performed through TCP port 443:
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Downloading the AWS Replication Agent on the source servers.
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Upgrading installed agents.
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Connecting the source servers to the AWS Application Migration Service console and displaying their replication status.
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Monitoring the source servers for internal troubleshooting and the use of resource consumption metrics (such as CPU, RAM).
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Reporting source server-related events (for example, a removal of disk, or resizing of a disk).
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Transmit source server-related information to the AWS Application Migration Service console (including hardware information, running services, and installed applications and packages).
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Preparing the source servers for test or cutover.
Important
Make sure that your corporate firewall allows connections over TCP port 443.
Solving communication problems over TCP port 443 between the source servers and AWS Application Migration Service
If there is no connection between your source servers and AWS Application Migration Service (AWS MGN), make sure that your corporate firewall enables connectivity from the source servers to AWS MGN over TCP Port 443. If the connectivity is blocked, enable it.
Enabling Windows Firewall for TCP port 443 connectivity
Important
The information provided in this section is for general security and firewall guidance only. The information is provided on "AS IS" basis, with no guarantee of completeness, accuracy or timeliness, and without warranty or representations of any kind, expressed or implied. In no event will AWS Application Migration Service and/or its subsidiaries and/or their employees or service providers be liable to you or anyone else for any decision made or action taken in reliance on the information provided here or for any direct, indirect, consequential, special or similar damages (including any kind of loss), even if advised of the possibility of such damages. AWS Application Migration Servicee is not responsible for the update, validation, or support of security and firewall information.
Note
Enabling Windows Firewall for TCP port 443 connectivity will allow your servers to achieve outbound connectivity. You may still need to adjust other external components, such as firewall blocking or incorrect routes, in order to achieve full connectivity.
Note
These instructions are intended for the default OS firewall. You will need to consult the documentation of any third-party local firewall you use to learn how to enable TCP port 443 connectivity.
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On the source server, open the Windows Firewall console.
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On the console, select the Outbound Rules option from the tree.
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On the Outbound Rules table, select the rule that relates to the connectivity to Remote Port - 443. Check if the Enabled status is Yes.
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If the Enabled status of the rule is No, right-click it and select Enable Rule from the pop-up menu.
Enabling Linux Firewall for TCP port 443 connectivity
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Enter the following command to add the required Firewall rule:
sudo iptables -A OUTPUT -p tcp --dport 443 -j ACCEPT
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To verify the creation of the Firewall rule, enter the following commands:
sudo iptables -L
Chain INPUT (policy ACCEPT)
target prot opt source destination
Chain FORWARD (policy ACCEPT)
target prot opt source destination
Chain OUTPUT (policy ACCEPT)
target prot opt source destination
ACCEPT tcp -- anywhere anywhere tcp dpt:443
Communication between the staging area subnet and AWS Application Migration Service over TCP port 443
The replication servers in the staging area subnet must continuously communicate with AWS Application Migration Service (AWS MGN) over TCP port 443. The main operations that are performed through this route are:
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Downloading the replication software by the replication servers.
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Connecting the replication servers to AWS Application Migration Service, and displaying their replication status.
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Monitoring the replication servers for internal troubleshooting use and resource consumption metrics (such as CPU, RAM).
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Reporting replication-related events.
Note
The staging area subnet requires S3 access.
Configuring communication over TCP port 443 between the staging area subnet and AWS Application Migration Service
You can establish communication between the staging area subnet and AWS Application Migration Service over TCP port 443 directly.
There are two ways to establish direct connectivity to the Internet for the VPC of the
staging area, as described in the VPC
FAQ
1. Public IP address + Internet gateway
2. Private IP address + NAT instance
Communication between the source servers and the staging area subnet over TCP port 1500
Each source server with an installed AWS Replication Agent continuously communicates with the AWS Application Migration Service replication servers in the staging area subnet over TCP port 1500. TCP port 1500 is needed for the transfer of replicated data from the source servers to the staging area subnet.
The replicated data is encrypted and compressed when transferred over TCP port 1500. Prior to being moved into the staging area subnet, the data is encrypted on the source infrastructure. The data is decrypted after it arrives at the staging area subnet and before it is written to the volumes.
TCP port 1500 is primarily used for the replication server data replication stream.
AWS Application Migration Service uses TLS 1.2 end to end from the agent installed on the source server to the Replication Server. Each replication server gets assigned a specific TLS server certificate, which is distributed to the corresponding Agent and validated against on the agent side.
Establishing communication over TCP port 1500
Important
To allow traffic over TCP port 1500, make sure that your corporate firewall enables this connectivity.