hardware: Cisco PIX 515E with 6.3.x version of OS Backup PIX configuration to tftp server login enable write net xxx.yyy.zzz.www:pix-conf-date.conf xxx.yyy.zzz.www – tftp IP address pix-conf-date.conf – configuration file name   Upgrade PIX OS from tftp login enable copy tftp flash <— upgrade OS reload <— restart PIX   Configure NTP server login enable conf t ntp…