Restricted File Transfer Protocol(FTP).FTP is used to transfer and exchange files between devices,and has applications in SCADA,dcs,PLC,RTU and other systems.The FTP protocol does not have any security principles.The login password is not encrypted.Some FTPs have overflow loopholes in order to realize the history buffer.Therefore,firewall rules should be configured to block their communication.If the FTP communication cannot be required to be prohibited,when outputting data through FTP,additional authentication codes with multiple signatures should be added,and an encrypted communication tunnel should be provided.
限制文件传输协议(FTP)。FTP用于在设备之间传输、交换文件，在SCADA、dcs、PLC、RTU等系统中都有应用。FTP协议并没有任何安全原则，登入密码不加密，有些FTP为了实现历史缓冲区而出现溢出的漏洞，所以应配置防火墙规则阻塞其通信。如果FTP通讯不能被要求禁止，通过FTP输出数据时，应额外增加多个特征码授权认证，并提供加密的通信隧道。
CUTLER HAMMER EHD1020 2 BREAKERS 1 LOT BOTH IN BOX
HONEYWELL C437D.E.G.H GAS PRESSURE SWITCH BRAND
APPLETON FS-1-50-A SINGLE GANG BOX ~ QTY X 6 ~ IN
ALLEN BRADLEY 1785-MS RAM MODULES ~ IN BOX
MODICON AS-B248 (10TO60 VDC 2-5A OUTPUT MODULE) GOOD TA
Allen Bradley 700-HT22BA1 Timing Relay, Bulletin 700, T
OMRON E3S-AD61 PHOTOELECTRIC SWITCH 10-30VDC , IN B
SPRINGER JC12A310T Thermolator Contactor ~ IN BOX
Keyence PS-49C Photoelectric Sensor Head ~NIB
