public override string ToString()
        {
            string sourceInfo;
            string destinationInfo;

            if (tcpTransfer)
            {
                sourceInfo      = sourceHost.ToString() + " TCP " + sourcePort;
                destinationInfo = destinationHost.ToString() + " TCP " + destinationPort;
            }
            else
            {
                sourceInfo      = sourceHost.ToString() + " UDP " + sourcePort;
                destinationInfo = destinationHost.ToString() + " UDP " + destinationPort;
            }

            return(filename + "\t" + sourceInfo + "\t" + destinationInfo);
        }