This indicates an attempt to use the GDS-DB protocol, a protocol used in database softwares based on Borland Interbase such as Firebird. It does not indicate any attack or exploit.
Risk
Low
Popularity
Low
Characteristic
Loss of productivity? Have disclosed vulnerability? Can bypass firewall policy? Contain built-in function for other purposes? Can communicate in clear text or via proxy? Can support file transfer? Can be misused? Can tunnel other apps?
Affected Applications
GDS-DB
Recommended Actions
You may set the signature to "BLOCK" if this kind of traffic is undesirable.