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"index_news"><a href="http://www.cdcfah.com/zx/"><span>新聞資訊</span></a></li><li id = "index_article"><a href="http://www.cdcfah.com/xw/"><span>行業(yè)資訊</span></a></li><li id = "index_show"><a href="http://www.cdcfah.com/zh/"><span>展會信息</span></a></li></ul></div></nav><section class="wrap clearfix"><section class="container clearfix tcPro"><section class="home-main container clearfix"><div id="ao3ttlx" class="twoCol"><div id="wcqvxj3" class="page-proshow clearfix"><p class="current"> 當前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/first-_aqfh/">安全、防護</a>?<a href="http://www.cdcfah.com/cp/second-aqfh_jkcssb/">監(jiān)控傳輸設(shè)備</a>?<a href="http://www.cdcfah.com/cp/third-jkcssb_wxcsxt/">無線傳輸系統(tǒng)</a>?阜陽防火墻哪家專業(yè) 值得信賴浙江越昕供應</p><div id="hvcz3kh" class="leftbox clearfix"><h1>阜陽防火墻哪家專業(yè) 值得信賴浙江越昕供應</h1><div id="ynury8i" class="proBig"><div id="2f3lspg" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yuexin/637369762546318360/7192797.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="mgdahtk" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/yuexin/637369762546318360/7192797.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="eykbizg" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>阜陽防火墻哪家專業(yè),防火墻</p><p><span>***更新：</span>2020-12-01 01:19:54</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="3cbsart" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">浙江越昕信息技術(shù)有限公司</a></p><p><span>聯(lián)系人：</span>戴偉強</p><p><span>郵箱: </span>dwq@shpanabit.com</p><p><span>電話: </span>13917159624</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.yuexininfo.com</p><p><span>手機: </span>021-80370549</p><p><span>地址: </span>長經(jīng)濟技術(shù)開發(fā)區(qū)高鐵路669號國家大學科技園12號樓228室</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="8lszbdk" class="page-proshow02"><p class="title">詳細說明</p><div id="lfmtf3w" class="box"><p><p style="text-indent:25px">防火墻自身應具有非常強的抗攻擊***：這是防火墻之所以能擔當企業(yè)內(nèi)部網(wǎng)絡(luò)安全防護重任的先決條件。防火墻處于網(wǎng)絡(luò)邊緣，它就像一個邊界衛(wèi)士一樣，每時每刻都要面對***的入侵，這樣就要求防火墻自身要具有非常強的抗擊入侵本領(lǐng)。它之所以具有這么強的本領(lǐng)防火墻操作系統(tǒng)本身是關(guān)鍵，只有自身具有完整信任關(guān)系的操作系統(tǒng)才可以談論系統(tǒng)的安全性。其次就是防火墻自身具有非常低的服務功能，除了專門的防火墻嵌入系統(tǒng)外，再沒有其它應用程序在防火墻上運行。當然這些安全性也只能說是相對的。國內(nèi)的防火墻幾乎被國外的品牌占據(jù)了一半的市場，國外品牌的優(yōu)勢主要是在技術(shù)和**度上比國內(nèi)產(chǎn)品高。而國內(nèi)防火墻廠商對國內(nèi)用戶了解更加透徹，價格上也更具有優(yōu)勢。防火墻產(chǎn)品中，國外主流廠商為思科（Cisco）、CheckPoint，阜陽防火墻哪家專業(yè)，阜陽防火墻哪家專業(yè)、NetScreen等，國內(nèi)主流廠商為東軟、天融信、聯(lián)想，阜陽防火墻哪家專業(yè)、方正等，它們都提供不同級別的防火墻產(chǎn)品。防火墻是一個類似于橋接或路由器的、多端口的（網(wǎng)絡(luò)接口>=2）轉(zhuǎn)發(fā)設(shè)備。阜陽防火墻哪家專業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阜陽防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369762546318360/7192797.png"></div><p style="text-indent:25px">網(wǎng)絡(luò)策略，影響Firewall系統(tǒng)設(shè)計、安裝和使用的網(wǎng)絡(luò)策略可分為兩級，高級的網(wǎng)絡(luò)策略定義允許和禁止的服務以及如何使用服務，低級的網(wǎng)絡(luò)策略描述Firewall如何限制和過濾在高級策略中定義的服務。服務訪問策略，服務訪問策略集中在Internet訪問服務以及外部網(wǎng)絡(luò)訪問（如撥入策略、SLIP/PPP連接等）。服務訪問策略必須是可行的和合理的?？尚械牟呗员仨氃谧柚挂阎木W(wǎng)絡(luò)風險和提供用戶服務之間獲得平衡。典型的服務訪問策略是：允許通過增強認證的用戶在必要的情況下從Internet訪問某些內(nèi)部主機和服務；允許內(nèi)部用戶訪問指定的Internet主機和服務?；窗卜阑饓ο到y(tǒng)費用防火墻就是一種在內(nèi)部與外部網(wǎng)絡(luò)的中間過程中發(fā)揮作用的防御系統(tǒng)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阜陽防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369761902275391/1243642.png"></div><p style="text-indent:25px">通過防火墻還能夠?qū)π畔?shù)據(jù)的流量實施有效查看，并且還能夠?qū)?shù)據(jù)信息的上傳和下載速度進行掌握，便于用戶對計算機使用的情況具有良好的控制判斷，計算機的內(nèi)部情況也可以通過這種防火墻進行查看，還具有啟動與關(guān)閉程序的功能，而計算機系統(tǒng)的內(nèi)部中具有的日志功能，其實也是防火墻對計算機的內(nèi)部系統(tǒng)實時安全情況與每日流量情況進行的總結(jié)和整理。防火墻是在兩個網(wǎng)絡(luò)通訊時執(zhí)行的一種訪問控制尺度，能較大限度阻止網(wǎng)絡(luò)中的***訪問你的網(wǎng)絡(luò)。是指設(shè)置在不同網(wǎng)絡(luò)（如可信任的企業(yè)內(nèi)部網(wǎng)和不可信的公共網(wǎng)）或網(wǎng)絡(luò)安全域之間的一系列部件的組合。它是不同網(wǎng)絡(luò)或網(wǎng)絡(luò)安全域之間信息的出入口，能根據(jù)企業(yè)的安全政策控制（允許、拒絕、監(jiān)測）出入網(wǎng)絡(luò)的信息流，且本身具有較強的抗攻擊能力。它是提供信息安全服務，實現(xiàn)網(wǎng)絡(luò)和信息安全的基礎(chǔ)設(shè)施。在邏輯上，防火墻是一個分離器，一個限制器，也是一個分析器，有效地監(jiān)控了內(nèi)部網(wǎng)和Internet之間的任何活動，保證了內(nèi)部網(wǎng)絡(luò)的安全。 </p><p style="text-indent:25px">根據(jù)網(wǎng)絡(luò)系統(tǒng)的安全需要，可以在如下位置部署防火墻：局域網(wǎng)內(nèi)的VLAN之間控制信息流向時；Intranet與Internet之間連接時(企業(yè)單位與外網(wǎng)連接時的應用網(wǎng)關(guān))；在廣域網(wǎng)系統(tǒng)中，由于安全的需要，總部的局域網(wǎng)可以將各分支機構(gòu)的局域網(wǎng)看成不安全的系統(tǒng)，（通過公網(wǎng)ChinaPac，ChinaDDN，F(xiàn)rame Relay等連接）在總部的局域網(wǎng)和各分支機構(gòu)連接時采用防火墻隔離，并利用VPN構(gòu)成虛擬專網(wǎng)；總部的局域網(wǎng)和分支機構(gòu)的局域網(wǎng)是通過Internet連接，需要各自安裝防火墻，并利用NetScreen的VPN組成虛擬專網(wǎng)；在遠程用戶撥號訪問時，加入虛擬專網(wǎng)；ISP可利用NetScreen的負載平衡功能在公共訪問服務器和客戶端間加入防火墻進行負載分擔、存取控制、用戶認證、流量控制、日志紀錄等功能；兩網(wǎng)對接時，可利用NetScreen硬件防火墻作為網(wǎng)關(guān)設(shè)備實現(xiàn)地址轉(zhuǎn)換(NAT)，地址映射（MAP），網(wǎng)絡(luò)隔離（DMZ）, 存取安全控制，消除傳統(tǒng)軟件防火墻的瓶頸問題。防火墻適用于用戶網(wǎng)絡(luò)系統(tǒng)的邊界，屬于用戶網(wǎng)絡(luò)邊界的安全保護設(shè)備。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="阜陽防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369762858984375/4743196.png"></div><p style="text-indent:25px">控防火墻系統(tǒng)是專門針對工業(yè)控制系統(tǒng)設(shè)計的安全防護類產(chǎn)品，用以提升整體網(wǎng)絡(luò)安全防護能力。系統(tǒng)采用獨有的工控協(xié)議指令級“四維一體”深度防護技術(shù)，支持OPC、Modbus TCP、Siemens S7、IEC104、EIP等多種主流工業(yè)協(xié)議深度解析，支持多種訪問控制規(guī)則、VPN、流量控制、安全審計、DOS攻擊防護、ARP攻擊防護和自身訪問控制等功能，可有效保障自身和工控網(wǎng)絡(luò)的雙重安全。產(chǎn)品基于工業(yè)級硬件平臺研發(fā)，具備寬溫、冗余電源、抗強電磁干擾等工業(yè)安全特性，適用于SCADA、DCS、PCS、PLC等工業(yè)監(jiān)控系統(tǒng)以及現(xiàn)場控制設(shè)備的安全防護，普遍應用于軌道交通、電力、冶金、煤炭、石油化工、市政、汽車、***、智能制造、核電、**等行業(yè)。防火墻技術(shù)的功能主要在于及時發(fā)現(xiàn)并處理計算機網(wǎng)絡(luò)運行時可能存在的安全風險、數(shù)據(jù)傳輸?shù)葐栴}。阜陽防火墻哪家專業(yè)</p><p style="text-indent:25px">防火墻的硬件體系結(jié)構(gòu)曾經(jīng)歷過通用CPU架構(gòu)、ASIC架構(gòu)和網(wǎng)絡(luò)處理器架構(gòu)。阜陽防火墻哪家專業(yè)</p><p style="text-indent:25px">如果在NAT模式的基礎(chǔ)上需要實現(xiàn)外部網(wǎng)絡(luò)訪問內(nèi)部網(wǎng)絡(luò)服務的需求時，還可以使用地址/端口映射（MAP）技術(shù)，在防火墻上進行地址/端口映射配置，當外部網(wǎng)絡(luò)用戶需要訪問內(nèi)部服務時，防火墻將請求映射到內(nèi)部服務器上；當內(nèi)部服務器返回相應數(shù)據(jù)時，防火墻再將數(shù)據(jù)轉(zhuǎn)發(fā)給外部網(wǎng)絡(luò)。使用地址/端口映射技術(shù)實現(xiàn)了外部用戶能夠訪問內(nèi)部服務，但是外部用戶無法看到內(nèi)部服務器的真實地址，只能看到防火墻的地址，增強了內(nèi)部服務器的安全性。防火墻都部署在網(wǎng)絡(luò)的出入口，是網(wǎng)絡(luò)通信的大門，這就要求防火墻的部署必須具備高可靠性。一般IT設(shè)備的使用壽命被設(shè)計為3至5年，當單點設(shè)備發(fā)生故障時，要通過冗余技術(shù)實現(xiàn)可靠性，可以通過如虛擬路由冗余協(xié)議（VRRP）等技術(shù)實現(xiàn)主備冗余。目前，主流的網(wǎng)絡(luò)設(shè)備都支持高可靠性設(shè)計。阜陽防火墻哪家專業(yè)</p><p style="text-indent:25px">浙江越昕信息技術(shù)有限公司致力于通信產(chǎn)品，以科技創(chuàng)新實現(xiàn)***管理的追求。浙江越昕作為從事計算機軟硬件技術(shù)領(lǐng)域內(nèi)的技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)咨詢、技術(shù)服務，計算機網(wǎng)絡(luò)集成，辦公設(shè)備維修，電子產(chǎn)品、電子元器件、數(shù)碼產(chǎn)品、計算機、軟件及輔助設(shè)備、通訊器材、通信設(shè)備及相關(guān)產(chǎn)品的銷售。（依法須經(jīng)批準的項目，經(jīng)相關(guān)部門批準后方可開展經(jīng)營活動）的企業(yè)之一，為客戶提供良好的派網(wǎng)，安恒，小魚易連，利譜。浙江越昕致力于把技術(shù)上的創(chuàng)新展現(xiàn)成對用戶產(chǎn)品上的貼心，為用戶帶來良好體驗。浙江越昕創(chuàng)始人林文瀧，始終關(guān)注客戶，創(chuàng)新科技，竭誠為客戶提供良好的服務。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2212143.html</p></div></div></div></div></div><div id="bvxz232" class="page-right twoColRt"><div id="mv7qnur" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="i3ifho3" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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