> For the complete documentation index, see [llms.txt](https://docs-epc.gitbook.io/ncs-documents/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs-epc.gitbook.io/ncs-documents/storage/object-storage-s3/access-s3-buckets-with-internal-network-for-ncs-instance.md).

# Access S3 buckets with internal network for NCS instance

 For Base Linux OS : 

1. edit file  /etc/hosts with super user

```
sudo vi /etc/hosts
```

2. add IP Address and hostname 

```
169.254.169.251 s3-bkk.nipa.cloud
169.254.169.252 s3-non.nipa.cloud
```

For Windows :

1. Open your text editor in Administrator mode
2. In the text editor, open *C:\Windows\System32\drivers\etc\hosts*
3. Add the IP Address and hostname

```
169.254.169.251 s3-bkk.nipa.cloud
169.254.169.252 s3-non.nipa.cloud
```

4. Save the changes

\
The S3 endpoint will use the link-local network and can function normally with tools like s3cmd, s3fs-fuse, or s3 libraries for S3 access.\
\
Note : Maximum object size when using S3 Individual S3 objects can range in size from a minimum of 0 B to a maximum of 5 TB. The largest object that can be uploaded in a single PUT is 5 GB. For objects larger than 100 MB, consider using the Multipart Upload capability.