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Synology router configuration backup file

application/octet-stream

Safe

Magic Bytes

Offset: 0
02 64 73 73

Synology router configuration backup (DSS) is a proprietary binary file format developed by Synology Inc. for their Synology Router Manager (SRM) operating system. It serves as a comprehensive archive of system parameters, firewall rules, and user settings, facilitating device restoration or hardware migration. Although the format is non-executable, these files frequently contain sensitive network credentials and should be managed with strict access controls to prevent unauthorized administrative access or potential network reconfiguration.

Extension

.dss

MIME Type

application/octet-stream

Byte Offset

0

Risk Level

Safe

Validation Code

How to validate .dss files in Python

Python
def is_dss(file_path: str) -> bool:
    """Check if file is a valid DSS by magic bytes."""
    signature = bytes([0x02, 0x64, 0x73, 0x73])
    with open(file_path, "rb") as f:
        return f.read(4) == signature

How to validate .dss files in Node.js

Node.js
function isDSS(buffer: Buffer): boolean {
  const signature = Buffer.from([0x02, 0x64, 0x73, 0x73]);
  return buffer.subarray(0, 4).equals(signature);
}

How to validate .dss files in Go

Go
func IsDSS(data []byte) bool {
    signature := []byte{0x02, 0x64, 0x73, 0x73}
    if len(data) < 4 {
        return false
    }
    return bytes.Equal(data[:4], signature)
}

API Endpoint

GET /api/v1/dss
curl https://filesignature.org/api/v1/dss

Related Formats

Frequently Asked Questions

What is a .dss file?

A .dss file is a Synology router configuration backup file file. Synology router configuration backup (DSS) is a proprietary binary file format developed by Synology Inc. for their Synology Router Manager (SRM) operating system. It serves as a comprehensive archive of system parameters, firewall rules, and user settings, facilitating device restoration or hardware migration. Although the format is non-executable, these files frequently contain sensitive network credentials and should be managed with strict access controls to prevent unauthorized administrative access or potential network reconfiguration.

What are the magic bytes for .dss files?

The magic bytes for Synology router configuration backup file files are 02 64 73 73 at byte offset 0. These bytes uniquely identify the file format regardless of the file extension.

How do I validate a .dss file?

To validate a .dss file, read the first bytes of the file and compare them against the known magic bytes (02 64 73 73) at offset 0. This is more reliable than checking the file extension alone, as extensions can be renamed.

What is the MIME type for .dss files?

The primary MIME type for .dss files is application/octet-stream.

Is it safe to open .dss files?

Synology router configuration backup file (.dss) files are generally safe to open. They are classified as low risk because they primarily contain data rather than executable code. However, always ensure files come from a trusted source.