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JIT SPRAY АНАЛИЗ TDSS - Xakep Online

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SYN/ACK<br />

Мастер установки Forefront UAG<br />

Инструмент Forefront UAG 2010 Best Practices<br />

Analyzer Tool поможет разобраться с проблемами<br />

Ïåðåõîäèì ê URL Set, ãäå îïðåäåëÿþòñÿ ïðàâèëà ïðîâåðêè àäðåñîâ.<br />

Çäåñü ìîæíî çàäàâàòü øàáëîíû è óêàçûâàòü äåéñòâèå Accept èëè<br />

Reject (URL, íå ïîïàäàþùèé ïîä øàáëîí, áóäåò áëîêèðîâàí). Ñàìè<br />

ïðàâèëà ìîãóò áûòü Primary (ïåðâè÷íûìè) è Exclude (ïîçâîëÿþò<br />

óñòàíîâèòü èñêëþ÷åíèÿ äëÿ Primary).<br />

Âî âêëàäêå Global URL Settings óòî÷íÿþòñÿ îáùèå ïðàâèëà, êîòîðûå<br />

äîáàâëÿþòñÿ ê íàñòðîéêàì, ïðîèçâåäåííûì â URL Set.<br />

Òåïåðü ìîæåì ïóáëèêîâàòü ïðèëîæåíèå íà ñåðâåðå UAG. Âûáèðàåì<br />

òðàíê è ïóíêò «Add Application» â êîíòåêñòíîì ìåíþ, ïîñëå ÷åãî<br />

çàïóñêàåòñÿ âèçàðä. Íà ïåðâîì øàãå âûáèðàåì ïðèëîæåíèå. Çäåñü<br />

ïÿòü ïóíêòîâ: Built-in services (ôàéëîâûé ñåðâèñ, âåá-ìîíèòîð), Web<br />

(Exchange, SharePoint, Dynamics CRM è ò.ä.), Client/server and legacy,<br />

Browser-embedded (Citrix XenApp), Terminal services (TS)/Remote<br />

Desktop Services (RDS). Âûáèðàåì ëþáîé, ïîñëå ÷åãî â ðàñêðûâàþùåìñÿ<br />

ñïèñêå ïðèëîæåíèå (ñì. âûøå â ñêîáêàõ). Äàëüíåéøèå<br />

íàñòðîéêè ìàñòåðà áóäóò çàâèñåòü îò âûáðàííûõ çäåñü óñòàíîâîê. È<br />

íàêîíåö, îòìå÷àåì, êàêèõ ïîëüçîâàòåëåé áóäåì àâòîðèçîâûâàòü.<br />

Âûïîëíåííûå íàñòðîéêè ñèñòåìà ñîõðàíèò â õðàíèëèùå TMG. Íà<br />

èõ îñíîâå àâòîìàòè÷åñêè ñîçäàþòñÿ íîâûå ïðàâèëà áðàíäìàóýðà, â<br />

ýòîì ìîæíî óáåäèòüñÿ, îòêðûâ ìåíåäæåð TMG: ìû óâèäèì âñå ïðàâèëà,<br />

ñîîòâåòñòâóþùèå íàøèì óñòàíîâêàì.<br />

НАСТРОЙКА DIRECTACCESS<br />

Òàê êàê ïîääåðæêà òåõíîëîãèè DirectAccess ÿâëÿåòñÿ îäíîé èç<br />

îñíîâíûõ ôóíêöèé, êîòîðàÿ îòëè÷àåò UAG îò IAG 2007, ðàññìîòðèì<br />

åå íàñòðîéêó. Ñíà÷àëà äîëæíû áûòü âûïîëíåíû îáÿçàòåëüíûå<br />

òðåáîâàíèÿ, âñå îíè îïèñàíû â äîêóìåíòå «Forefront UAG<br />

DirectAccess prerequisites», íî åãî ñòðóêòóðà äîâîëüíî çàïóòàíà, ñ<br />

ìíîæåñòâîì ïåðåõîäîâ, ïîýòîìó èçëîæó âñå â êðàòêîé ôîðìå. Òàê,<br />

êîìïüþòåð îáÿçàòåëüíî äîëæåí áûòü ïîäêëþ÷åí ê äîìåíó, èìåòü<br />

äâå ñåòåâûå êàðòû, à âíåøíèé ñåòåâîé èíòåðôåéñ îáëàäàòü äâóìÿ<br />

«áåëûìè» IPv4-àäðåñàìè (ïîäðîáíîñòè ïî àäðåñó go.microsoft.com/<br />

NAP & NPS<br />

Network Access Protection — òåõíîëîãèÿ, ïîçâîëÿþùàÿ êîíòðîëèðîâàòü<br />

äîñòóï ê ñåòè, èñõîäÿ èç èíôîðìàöèè î ñîñòîÿíèè<br />

ñèñòåìû êëèåíòñêîãî õîñòà.<br />

Network Policy Server ïîçâîëÿåò öåíòðàëèçîâàííî íàñòðàèâàòü<br />

è óïðàâëÿòü ñåòåâûìè ïîëèòèêàìè, èñïîëüçóÿ äëÿ ýòîãî<br />

RADIUS-ñåðâåð, RADIUS-ïðîêñè è ñåðâåð ïîëèòèê NAP.<br />

118<br />

fwlink/?LinkId=169486). Äëÿ óäîáñòâà óïðàâëåíèÿ ëó÷øå ñîçäàòü<br />

îòäåëüíîå ïîäðàçäåëåíèå â AD, âñå ó÷åòíûå çàïèñè êëèåíòñêèõ<br />

êîìïüþòåðîâ è ñåðâåðîâ, âõîäÿùèõ â íåãî, áóäóò ïîëó÷àòü äîñòóï<br />

ê DirectAccess. Òàêæå ñëåäóåò íàñòðîèòü àâòîìàòè÷åñêóþ ïîäà÷ó<br />

çàÿâîê íà ñåðòèôèêàòû (AutoEnrollment), ïîçâîëÿþùóþ àâòîìàòîì<br />

ðåãèñòðèðîâàòü ñåðòèôèêàòû êëèåíòîâ. Äëÿ ýòîãî çàïóñêàåòñÿ<br />

êîíñîëü Certification Authority, è âî âêëàäêå Manage –> Certificate<br />

Templates âûáèðàåì Workstation Authentication. Äàëåå çàíîñèì â<br />

ñïèñîê äîìåííûå ãðóïïû, êîòîðûå áóäóò èñïîëüçîâàòüñÿ ïðè ïîäêëþ÷åíèè<br />

ê DirectAccess, è óñòàíàâëèâàåì ðàçðåøåíèÿ Autoenroll<br />

è Enroll. Â ðåäàêòîðå ãðóïïîâûõ ïîëèòèê ñîçäàåì íîâûé GPO<br />

(DirectAccess IPsec Certificate AutoEnrollment), çàòåì â «Computer<br />

Configuration –> Policies –> Windows Settings –> Security Settings»<br />

âûáèðàåì «Public Key Policies –> Certificate Services Client –><br />

Autoenrollment». Âûçûâàåì îêíî ðåäàêòèðîâàíèÿ è óñòàíàâëèâàåì<br />

ôëàæêè «Renew expired certificates» è «Update certificates that use<br />

certificate templates». Â Security Filtering äîáàâëÿåì ãðóïïû, êîòîðûå<br />

áóäóò ðàáîòàòü ñ DirectAccess, âñå îñòàëüíûå ãðóïïû, ïðîïèñàííûå<br />

çäåñü ïî óìîë÷àíèþ, óäàëÿåì.<br />

Åùå îäèí âàæíûé ïóíêò — íàñòðîéêà DNS-èíôðàñòðóêòóðû.<br />

×àñòè÷íî íàñòðîéêè áûëè ðàññìîòðåíû â ñòàòüå «Ñèíõðîííûé çàïëûâ<br />

íà äàëüíþþ äèñòàíöèþ», îïóáëèêîâàííîé â ][ 11.2009, íàì<br />

ëèøü îñòàåòñÿ ïðè ïîìîùè GPO óñòàíîâèòü DNS-ñóôôèêñû äëÿ<br />

êëèåíòîâ, ïîäêëþ÷àþùèõñÿ ïîñðåäñòâîì DirectAccess. Ïåðåõîäèì<br />

â Computer Configuration Policies Administrative Templates <br />

Ðåøàåì ïðîáëåìû<br />

Íåñìîòðÿ íà òî, ÷òî â íàñòðîéêå òðàíêîâ, ïðèëîæåíèé è<br />

ïðî÷èõ ïàðàìåòðîâ UAG ïîìîãàþò ìàñòåðà, âûäàþùèå<br />

âíÿòíûå ïîäñêàçêè, ñ ïåðâîãî ðàçà âñå çàïóñòèòü íå âñåãäà<br />

ïîëó÷àåò ñÿ. Óæ ñëèøêîì ìíîãî ñåðâèñîâ çàâÿçàíî â åäèíûé<br />

óçåë. Ïðîáëåìû, êîòîðûå êàñàþòñÿ òåêóùåãî óçëà, îòîáðàæàþòñÿ<br />

â êîíñîëè óïðàâëåíèÿ UAG. Ïðîàíàëèçèðîâàòü ñèòóàöèþ<br />

â êîìïëåêñå ïîìîæåò èíñòðóìåíò Forefront UAG 2010<br />

Best Practices Analyzer (BPA) Tool, êîòîðûé ìîæíî ñêà÷àòü<br />

ñ ñàéòà Microsoft. Ïðîâåäÿ ðÿä òåñòîâ, BPA âûäàåò îò÷åòû, â<br />

íèõ áóäåò îòðàæåíà òåêóùàÿ ñèòóàöèÿ, êëþ÷åâûå ìîìåíòû â<br />

íàñòðîéêàõ è ïîòåíöèàëüíûå ïðîáëåìû. Êðîìå òîãî, âûïîëíÿÿ<br />

ðåêîìåíäàöèè, âûäàííûå BPA, ìîæíî äîñòè÷ü áîëüøåé<br />

ïðîèç âîäèòåëüíîñòè. Äëÿ Forefront TMG äîñòóïåí àíàëîãè÷íûé<br />

èíñòðóìåíò — Forefront TMG BPA Tool.<br />

XÀÊÅÐ 09 /140/ 10

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