ASTEC Eyes identifies an application layer protocol by the port numbers of TCP or UDP. Therefore, ASTEC Eyes can not identify an application or protocol when a proxy server is used and/or an application layer protocol uses a port other than one of the well-known ports. When a well-known port is not assigned for an application or protocol, ASTEC Eyes can not identify it either.

In such cases, configure the decoding hint.

Procedure

1. Open [Options] dialog box.
2. Click [Decode Hints] item in the tree view in the left of the dialog box.
3. Configure the decoding hint.

Note

• When ASTEC Eyes can not identify an application layer protocol, "Unknown TCP Protocol" or "Unknown UDP Protocol" is used for the protocol in the Traffic window.

References

• Monitoring the Protocols Which ASTEC Eyes Do not Know
• Decoding Protocols Transmitted through Other than the Well-known Ports
• Identifying Protocols ASTEC Eyes does not Support
• Configuring Decode Hints
• Keyboard Operations within a Decode Hints Dialog Box
• Displaying Protocol Information