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style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>六安防火墻哪家專業(yè),防火墻</p><p><span>***更新：</span>2020-11-13 01:22:17</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="sw8bn72" 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(xué)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="r3xkls4" class="page-proshow02"><p class="title">詳細說明</p><div id="2hv7dzi" class="box"><p><p style="text-indent:25px">防火墻在內(nèi)網(wǎng)中的設(shè)定位置是比較固定的，一般將其設(shè)置在服務(wù)器的入口處，通過對外部的訪問者進行控制，從而達到保護內(nèi)部網(wǎng)絡(luò)的作用，而處于內(nèi)部網(wǎng)絡(luò)的用戶，可以根據(jù)自己的需求明確權(quán)限規(guī)劃，使用戶可以訪問規(guī)劃內(nèi)的路徑?？偟膩碚f，內(nèi)網(wǎng)中的防火墻主要起到以下兩個作用：一是認證應(yīng)用，內(nèi)網(wǎng)中的多項行為具有遠程的特點，只有在約束的情況下，通過相關(guān)認證才能進行；二是記錄訪問記錄，避免自身的攻擊，形成安全策略。應(yīng)用于外網(wǎng)中的防火墻，主要發(fā)揮其防范作用，外網(wǎng)在防火墻授權(quán)的情況下，才可以進入內(nèi)網(wǎng)。針對外網(wǎng)布設(shè)防火墻時，必須保障多方面性，促使外網(wǎng)的所有網(wǎng)絡(luò)活動均可在防火墻的監(jiān)視下，如果外網(wǎng)出現(xiàn)非法入侵，防火墻則可主動拒絕為外網(wǎng)提供服務(wù)。基于防火墻的作用下，內(nèi)網(wǎng)對于外網(wǎng)而言，處于完全封閉的狀態(tài)，外網(wǎng)無法解析到內(nèi)網(wǎng)的任何信息。防火墻成為外網(wǎng)進入內(nèi)網(wǎng)的途徑，所以防火墻能夠詳細記錄外網(wǎng)活動，六安防火墻哪家專業(yè)，匯總成日志，六安防火墻哪家專業(yè)，防火墻通過分析日常日志，六安防火墻哪家專業(yè)，判斷外網(wǎng)行為是否具有攻擊特性。防火墻系列產(chǎn)品提供多方面的安全防護。六安防火墻哪家專業(yè)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="六安防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369762640263672/1746756.png"></div><p style="text-indent:25px">防止內(nèi)部信息的外泄，通過利用防火墻對內(nèi)部網(wǎng)絡(luò)的劃分，可實現(xiàn)內(nèi)部網(wǎng)重點網(wǎng)段的隔離，從而限制了局部重點或敏感網(wǎng)絡(luò)安全問題對全局網(wǎng)絡(luò)造成的影響。再者，隱私是內(nèi)部網(wǎng)絡(luò)非常關(guān)心的問題，一個內(nèi)部網(wǎng)絡(luò)中不引人注意的細節(jié)可能包含了有關(guān)安全的線索而引起外部攻擊者的興趣，甚至因此而暴漏了內(nèi)部網(wǎng)絡(luò)的某些安全漏洞。使用防火墻就可以隱蔽那些透漏內(nèi)部細節(jié)如Finger，DNS等服務(wù)。Finger顯示了主機的所有用戶的注冊名、真名，之后登錄時間和使用shell類型等。但是Finger顯示的信息非常容易被攻擊者所獲悉。攻擊者可以知道一個系統(tǒng)使用的頻繁程度，這個系統(tǒng)是否有用戶正在連線上網(wǎng)，這個系統(tǒng)是否在被攻擊時引起注意等等。防火墻可以同樣阻塞有關(guān)內(nèi)部網(wǎng)絡(luò)中的DNS信息，這樣一臺主機的域名和IP地址就不會被外界所了解。除了安全作用，防火墻還支持具有Internet服務(wù)性的企業(yè)內(nèi)部網(wǎng)絡(luò)技術(shù)體系VPN（虛擬**網(wǎng)）。進出網(wǎng)絡(luò)的數(shù)據(jù)都必須經(jīng)過防火墻，防火墻通過日志對其進行記錄，能提供網(wǎng)絡(luò)使用的詳細統(tǒng)計信息。當發(fā)生可疑事件時，防火墻更能根據(jù)機制進行報警和通知，提供網(wǎng)絡(luò)是否受到威脅的信息。六安防火墻哪家專業(yè)數(shù)據(jù)庫防火墻，該產(chǎn)品通過實時分析用戶對數(shù)據(jù)庫的訪問行為，自動建立合法訪問數(shù)據(jù)庫的特征模型。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="六安防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369762900136719/4593480.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(yīng)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)。</p><p style="text-indent:25px">網(wǎng)關(guān)模式適用于內(nèi)外網(wǎng)不在同一網(wǎng)段的情況，防火墻設(shè)置網(wǎng)關(guān)地址實現(xiàn)路由器的功能，為不同網(wǎng)段進行路由轉(zhuǎn)發(fā)。網(wǎng)關(guān)模式相比橋模式具備更高的安全性，在進行訪問控制的同時實現(xiàn)了安全隔離，具備了一定的私密性。NAT（Network Address Translation）地址翻譯技術(shù)由防火墻對內(nèi)部網(wǎng)絡(luò)的IP地址進行地址翻譯，使用防火墻的IP地址替換內(nèi)部網(wǎng)絡(luò)的源地址向外部網(wǎng)絡(luò)發(fā)送數(shù)據(jù)；當外部網(wǎng)絡(luò)的響應(yīng)數(shù)據(jù)流量返回到防火墻后，防火墻再將目的地址替換為內(nèi)部網(wǎng)絡(luò)的源地址。NAT模式能夠?qū)崿F(xiàn)外部網(wǎng)絡(luò)不能直接看到內(nèi)部網(wǎng)絡(luò)的IP地址，進一步增強了對內(nèi)部網(wǎng)絡(luò)的安全防護。同時，在NAT模式的網(wǎng)絡(luò)中，內(nèi)部網(wǎng)絡(luò)可以使用私網(wǎng)地址，可以解決IP地址數(shù)量受限的問題。防火墻是提供信息安全服務(wù)，實現(xiàn)網(wǎng)絡(luò)和信息安全的基礎(chǔ)設(shè)施。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="六安防火墻哪家專業(yè),防火墻" src="https://tyunfile.71360.com/UploadFile/yuexin/637369762546318360/7192797.png"></div><p style="text-indent:25px">防火墻系統(tǒng)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。它可通過監(jiān)測、限制、更改跨越防火墻的數(shù)據(jù)流，盡可能地對外部屏蔽網(wǎng)絡(luò)內(nèi)部的信息、結(jié)構(gòu)和運行狀況，以此來實現(xiàn)網(wǎng)絡(luò)的安全保護。在邏輯上，它是一個分離器，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。增強的保密性，使用Firewall可以阻止攻擊者獲取攻擊網(wǎng)絡(luò)系統(tǒng)的有用信息，如Figer和DNS。記錄和統(tǒng)計網(wǎng)絡(luò)利用數(shù)據(jù)以及非法使用數(shù)據(jù)Firewall可以記錄和統(tǒng)計通過Firewall的網(wǎng)絡(luò)通訊，提供關(guān)于網(wǎng)絡(luò)使用的統(tǒng)計數(shù)據(jù)，并且，F(xiàn)irewall可以提供統(tǒng)計數(shù)據(jù)，來判斷可能的攻擊和探測。策略執(zhí)行，F(xiàn)irewall提供了制定和執(zhí)行網(wǎng)絡(luò)安全策略的手段。未設(shè)置Firewall時，網(wǎng)絡(luò)安全取決于每臺主機的用戶。一個防火墻（作為阻塞點、控制點）能較大地提高一個內(nèi)部網(wǎng)絡(luò)的安全性。威海防火墻系統(tǒng)開發(fā)</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)。六安防火墻哪家專業(yè)</p><p style="text-indent:25px">攻擊防護，DAS-Gateway-NGFW支持TCP/IP攻擊防護（IP碎片攻擊、IP Option攻擊、IP地址欺騙攻擊、Land攻擊、Smurf攻擊、Fraggle攻擊、Huge ICMP包攻擊、ARP欺騙攻擊、WinNuke攻擊、Ping-of-Death攻擊、Teardrop攻擊）；支持掃描保護（IP地址掃描攻擊、端口掃描攻擊）；支持Flood保護（Syn Flood攻擊、ICMP Flood攻擊、UDP Flood攻擊、DNS Query Flood攻擊）；支持二層攻擊防護（IP-MAC靜態(tài)綁定、主機防御、ARP防護、DHCP Snooping）。DAS-Gateway-NGFW具有許可證控制的病毒過濾功能，能夠為用戶提供高速、高性能以及低延遲的病毒過濾解決方案。配置DAS-Gateway-NGFW的病毒過濾功能后，設(shè)備能夠探測各種病毒威脅，例如蠕蟲、木馬、惡意軟件、惡意網(wǎng)站等，并且根據(jù)配置對發(fā)現(xiàn)的病毒進行處理。六安防火墻哪家專業(yè)</p><p style="text-indent:25px">浙江越昕信息技術(shù)有限公司位于長經(jīng)濟技術(shù)開發(fā)區(qū)高鐵路669號國家大學(xué)科技園12號樓228室。公司業(yè)務(wù)涵蓋派網(wǎng)，安恒，小魚易連，利譜等，價格合理，品質(zhì)有保證。公司注重以質(zhì)量為中心，以服務(wù)為理念，秉持誠信為本的理念，打造通信產(chǎn)品良好品牌。在社會各界的鼎力支持下，持續(xù)創(chuàng)新，不斷鑄造***服務(wù)體驗，為客戶成功提供堅實有力的支持。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1963874.html</p></div></div></div></div></div><div id="a8yujp9" class="page-right twoColRt"><div id="ygxolhl" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="sgxoqcb" class="recomPic likePro"><a 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