Steven Ciaburri | Industry's Best Server Management- Rack911.com
Software Auditing - 400+ Vulnerabilities Found - Quote @ https://www.RACK911Labs.com Fully Managed Dedicated Servers (Las Vegas, New York City, & Amsterdam) (AS62710)
FreeBSD & Linux Server Management, Security Auditing, Server Optimization, PCI Compliance
Which application are we talking about? A tool which literally owns me is sockstat ( http://www.reznor.com/tools/sockstat.c ). If it's a daemon (http, mysql, whatever) and it starts at boot, and you try and start it again, the previous instance will, of course, have posession of the port.