SMB – Server Message Block (SMB) operates as an application-layer network protocol mainly used to provide shared access to files, printers, serial ports, and miscellaneous
SMSFW stands for Short Message Service Firewall An SMS firewall is a security solution that helps in filtering and blocking unwanted or malicious SMS traffic
SMTP – Simple Mail Transfer Protocol (SMTP,RFC5321) is an Internet standard for electronic mail (e-mail) transmission. SMTP is a connection-oriented, text-based protocol in which a