描述
限制文件傳輸協(xié)議(FTP)。FTP用于在設(shè)備之間傳輸、交換文件,在SCADA、dcs、PLC、RTU等系統(tǒng)中都有應(yīng)用。FTP協(xié)議并沒有任何安全原則,登入密碼不加密,有些FTP為了實(shí)現(xiàn)歷史緩沖區(qū)而出現(xiàn)溢出的漏洞,所以應(yīng)配置防火墻規(guī)則阻塞其通信。如果FTP通訊不能被要求禁止,通過FTP輸出數(shù)據(jù)時(shí),應(yīng)額外增加多個(gè)特征碼授權(quán)認(rèn)證,并提供加密的通信隧道。
簡(jiǎn)單郵件傳輸協(xié)議(SMTP)。SMTP在互聯(lián)網(wǎng)上是主要的電子郵件傳輸協(xié)議。電子郵件經(jīng)常包含惡意代碼程序,所以不應(yīng)允許以任何控制網(wǎng)絡(luò)設(shè)備接收電子郵件,SMTP郵件應(yīng)主要用于從控制網(wǎng)絡(luò)到辦公網(wǎng)絡(luò)之間輸出發(fā)送報(bào)警信息。
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主營(yíng):世界知名品牌的PLC、DCS系統(tǒng)備件模塊
①Allen-Bradley(美國(guó)AB)系列產(chǎn)品》
②Schneider(施耐德電氣)系列產(chǎn)品》
③General electric(通用電氣)系列產(chǎn)品》
④Westinghouse(美國(guó)西屋)系列產(chǎn)品》
⑤SIEMENS(西門子系列產(chǎn)品)》
⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。
⑦estinghouse(西屋):OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。
⑧Invensys Foxboro(??怂共_):I/A Series系統(tǒng),F(xiàn)BM(現(xiàn)場(chǎng)輸入/輸出模塊)
順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉(zhuǎn)換、輸入/輸出信號(hào)處理、數(shù)
據(jù)通信及處理等。Invensys Triconex:冗余容錯(cuò)控制系統(tǒng)、基于三重模件冗余(TMR)
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)控制器。
⑨Siemens(西門子):Siemens MOORE,Siemens Simatic C1,Siemens數(shù)控系統(tǒng)等。
⑩Bosch Rexroth(博世力士樂):Indramat,I/O模塊,PLC控制器,驅(qū)動(dòng)模塊等。
◆Motorola(摩托羅拉):MVME 162、MVME 167、MVME1772、MVME177等系列。
Reliance Electric Redundancy Processor # 45C204A
Expedited shipping available
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One-day shipping available
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Reliance Electric PC CLDR Card M# 0-51865-14 ~NEW~
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