Windows
Compatible applications
Quick Facts
Basic information about this file format
Extension
.SNOOP
File Type
Snoop Network Capture File
Category
Data
Best first step
Use compatible software
Quick Summary
A practical overview of the .snoop file format
The .snoop file format is a legacy packet capture format originally developed for the Solaris operating system. It is used by the 'snoop' command-line utility, which is a network diagnostic tool that captures and inspects network traffic flowing through a network interface. Similar to the more mode…
File extension
.SNOOP
File type
Snoop Network Capture File
Category
Data
Recommended action
Open with a trusted compatible app
How to open a .snoop file
Start with a trusted app that supports this format
- Check the file extension carefully and confirm that the file name really ends with .snoop.
- Use software that supports this file type. If one app does not work, try another compatible program for the same platform.
- Update the application if the file was created by a newer version of the software.
- Scan files from unknown sources before opening them, especially documents, archives, scripts, installers, and executable files.
What is a .snoop file?
File extension details and usage information
The .snoop file format is a legacy packet capture format originally developed for the Solaris operating system. It is used by the 'snoop' command-line utility, which is a network diagnostic tool that captures and inspects network traffic flowing through a network interface. Similar to the more modern and widely used PCAP format, a snoop file stores raw packet data, including headers and payloads, allowing network administrators to analyze traffic patterns, troubleshoot connectivity issues, and perform security audits. Because the format is specific to older Unix-based systems, it is less common today than PCAP or PCAPNG. However, it remains historically significant in network administration. The format captures data at the data link layer, providing a comprehensive view of the frames traversing the wire. While modern tools often convert snoop files into more compatible formats for analysis in software like Wireshark, the raw snoop file serves as a direct record of network activity as observed by the Solaris kernel at the time of capture.
Software Compatibility
Programs that may open or work with .snoop files
macOS
Compatible applications
Linux
Compatible applications
Mobile
Mobile applications
Can .snoop files be converted?
Options for saving or exporting this file to another format
In many cases, a .snoop file can be converted by opening it in compatible software and using an option such as Save As, Export, or Convert. The available output formats depend on the file type and the application used.
- Use the original software that created the file when possible.
- Check whether the application supports exporting to common formats.
- Be careful with online converters when working with private, business, or sensitive files.
- If conversion fails, the file may be corrupted, incomplete, encrypted, or not actually a .snoop file.
Why can't I open a .snoop file?
Common reasons this file type may not open correctly
Wrong software
The file may require a specific program that supports the .snoop format.
Incorrect extension
The file extension may have been renamed manually, even though the actual file format is different.
Corrupted file
The file may be incomplete, damaged during download, or transferred incorrectly.
Outdated app
Your software may need to be updated before it can open newer versions of this file format.
Frequently Asked Questions
Common questions about .snoop files
To open a .snoop file, use software that supports this file format.
- Wireshark
- Network Monitor
- Tcpdump
- Tshark
- None
Open the file in compatible software and look for options such as Save As, Export, or Convert. If no export option is available, the file may require a specialized converter or the original application that created it.
- Verify that the file extension is correct.
- Install or update compatible software.
- Try another application that supports this format.
- Check whether the file is corrupted, incomplete, or encrypted.
A file extension alone does not guarantee whether a file is safe or unsafe. Only open files from trusted sources, scan unknown files before opening them, and be especially careful with executable, script, archive, and document files.
File safety tips
Use caution with unknown files
Only open files from trusted sources. Before opening a .snoop file, scan it with antivirus software, verify that the file extension is expected, and avoid running unknown executable, installer, macro-enabled document, or script files.