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Updating README for 'noresvport' mount option #1158

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Sep 27, 2023
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Updating README for 'noresvport' mount option #1158

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3 changes: 3 additions & 0 deletions docs/README.md
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Expand Up @@ -52,6 +52,9 @@ If you want to pass any other mountOptions to Amazon EFS CSI driver while mounti
* **lookupcache**: Specifies how the kernel manages its cache of directory entries for a given mount point. Mode can be one of all, none, pos, or positive. Each mode has different functions and for more information you can refer to this [link](https://linux.die.net/man/5/nfs).
* **iam**: Use the CSI Node Pod's IAM identity to authenticate with Amazon EFS.

### Default Mount Options
When using the EFS CSI driver, be aware that the `noresvport` mount option is enabled by default. This means the client can use any available source port for communication, not just the reserved ports.

### Encryption In Transit
One of the advantages of using Amazon EFS is that it provides [encryption in transit](https://aws.amazon.com/blogs/aws/new-encryption-of-data-in-transit-for-amazon-efs/) support using TLS. Using encryption in transit, data will be encrypted during its transition over the network to the Amazon EFS service. This provides an extra layer of defence-in-depth for applications that requires strict security compliance.

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