Unified Threat Management (UTM) solution has evolved from traditional firewall and VPN appliances to offer anti-virus capability, e-mail spam filtering, web content filtering and IDS/IPS in one pack. As it is accessible solely to the administrator, strong authentication mechanism is required to ensure the identity of administrator before performing any operation.Traditional single factor authentication depends on user’s knowledge of some secret i.e. a password or a PIN. However, it is not secure enough. Two factor authentication is one which can be used as strong authentication scheme. This paper proposes secure framework using smart card to ensure UTM administrator’s identity. It sorts out all the essential requirements that have to be achieved.