http___microsoftguru.com.au_hr_tag_reverse-proxy__1.xml
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Configure FF TMG 2010 as SOCKS Proxy In this article I am going write about SOCKS proxy and applications of SOCKS proxy in enterprise. lets begin with SOCKS proxy. Socket Secure (SOCKS) is an Internet protocol that routes network packets between a client and server through a proxy server. SOCKS servers will proxy TCP connections to an arbitrary IP address as well as providing a means for UDP packets to be forwarded. SOCKS performs at Layer 5 of the OSI model—the session layer. In simple terms, SOCKS is an IETF approved standard for TCP/IP based networking applications. The SOCKS proxy provides the capability to allow traffic to be handled by a proxy for those applications (IM, ICQ) that do not have the native ability to set proxy parameters. Let me explain forward proxy or proxy server. A proxy server’s function is to receive a request from a web browser or client, to perform that request (possibly after authorization checks), and return the results to the browser or client. Advantages of proxy is the IP addresses or names of the internal systems never appear on the Internet, internet see the address of the proxy server. So attackers cannot use the addresses to gain information about your internal system names and network structure. Requests for certain sites can be restricted or banned. Web proxy servers usually support many protocols, including HTTP, FTP, Gopher, HTTPS. How does SOCKS server works? Proxy servers can themselves use the SOCKS protocol to provide additional security. SOCKS proxy add a layer of encapsulation into the request from the client and forward the encapsulated request to the destination. Advantages: - Encapsulating any TCP protocol within the SOCKS protocol. On the client system, within the corporate network, the data packets to be sent to or from an external system will be put inside a SOCKS packet and sent to a SOCKS server. - Returning packets will be sent to the SOCKS server, which will encapsulate them similarly and pass on to the original client, which remove the SOCKS encapsulation, giving the required data. Disadvantages: - The advantage of all this is that the firewall can be very simply configured, to allow any TCP/IP connection on any port, from the SOCKS server to the non-secure Internet, trusting it to disallow any connections which are initiated from the Internet. - The disadvantages are that browser configuration is more complex, the added data transfers can add an extra delay to page access, and sometimes proxies impose additional restrictions such as a time-out on the length of a connection, preventing very large downloads. Microsoft FF TMG 2010 can perform itself as a SOCKS server or SOCKS Gateway or SOCKS Proxy. To configure Microsoft FF TMG 2010 as SOCKS gateway. Log on to FF TMG 2010>Open TMG management console>Click on System>Click on Application Filter>Right Click SOCKS4 Filter>Click Enable Apply Changes>Click OK. Right Click SOCKS4 Filter>Click Enable>Click Property. Keep Default Port number>Select the network where SOCKS request will originate. For example Internal Network. Click Ok. Apply Changes>Click Ok. Now create a firewall policy to allow SOCKS communication between a source and destination. For example here I created policy opening SOCKS port between internal network and SOCKS gateway that is my proxy server. Apply changes. Click Ok. The following are the screenshot shows ICQ protocol available in TMG 2010 Protocols. If you don’t see your desired protocol on the list. you can add user defined protocol by simply adding new protocol. for ICQ communication, you have to create a rule specifying source and destination and the protocol you are allowing. To Configure FTP SOCKS connection configure global settings of cute FTP or individual connection settings in each connections shown as below. To configure proxy settings in IE. Open IE>Click Tools>Click Internet options>Click Connections>Click LAN Settings>Click proxy Settings and add SOCKS gateway or SOCKS proxy server details. You can configure SOCKS proxy via GPO. Create and Link a GPO with an OU> Right Click on GPO>Click Edit>navigate to User configuration\windows settings\internet explorer maintenance Expand internet explorer maintenance node, and in the connection section, double-click Proxy settings. You can define Proxy setting for users. To configure ICQ, Click on the Main button>Select Preferences>Click Connections. Click on the Firewall tab and select Socks4 - Type Proxy IP address in the Host - Type in the proxy Port 1080 - Type username and password in the Authentication - Apply and Click Ok Setup FTP 7.5 on Windows Server 2008 and publish through Forefront TMG 2010 There are two FTP servers that can be used with IIS 7. FTP 7.0 is included with Windows Server® 2008. FTP 7.5 is included with Windows Server® 2008 R2. you can download new FTP 7.5 from FTP for IIS 7.0 (x86) or FTP for IIS 7.0 (x64) depending on server architecture. Requirements - You must be using Windows Server 2008. - You must uninstall FTP 6.0 that is included with Windows Server 2008 before you install FTP 7.5. - IIS 7 must be installed, and IIS Manager should be installed if you are going to manage the FTP server by using the IIS Manager user interface. - You must be an administrator to install the FTP server. - IIS 7 supports a shared configuration environment, which must be disabled on each server in a Web farm before you install FTP server on each node. - Forefront TMG for publishing FTP to extranet To install the FTP service on Windows Server 2008 R2 On the Start menu, click Administrative Tools, and then click Server Manager. In the Server Manager Pane, in the Roles Summary section, click Web Server (IIS). In the Web Server (IIS) section, click Add Role Services. Under Role services, select FTP Publishing Service. This will install the FTP service and the FTP management console. Note that for Windows Server 2008, do not Select FTP publishing service. Download FTP 7.5 and install separately once IIS installation is completed. Click Next, and then click Install. To install FTP 7.5 separately: If you are using Windows Server 2008 R2, download FTP7.5 from Microsoft Download Center and install separately. Double click on ftp7_x86_75, Click Next and Accept Eula, Click Next and continue installation. Click Finish once installation completed. Verify FTP services Started Click on Start Menu, Click on Administrative Tools, Click Services Check Microsoft FTP Services and IIS Admin Services Started and Set Start-up type Automatic Click on Start Menu, Click on Administrative Tools, Click Event Viewer, Expand Windows Logs, Click on Setup As a best practice Check IIS setup completed with no error To Add FTP Site from the IIS management Console Expand down to Sites Click Add FTP site from the actions menu Specify a Site name, Specify a physical path Anon FTP For this article, I am showing anonymous ftp however, anonymous ftp isn’t recommended in production environment. Select and ip address (this would be your internal one) leave the port on 21 (Do not specify a host name – if you want make it simple and easy) Check Start FTP Site Automatically , I selected No SSL, You can select SSL if you want to. For this article, I leave it as no SSL. For Authentication I check Anonymous. Authorisation Allow access to Anonymous users With Read and Write. However, in production environment, never allow anonymous access. To setup the permissions in the local file system. Right Click on newly created FTP site, Click on Edit Permission. Right Click and get to the security tab and then click on Advanced Click Change Permissions, Un-check “Include inheritable permissions from the object’s parent” Click Add to add the original permission. Add or modify preferred permission. Close this all off. Follow the following steps to add anonymous access. Open the advanced permissions again (it should be nicely refreshed now) Click add, From the location field change this to the server, Enter the user name IUSR click check name and OK (this is the “Anonymous User” account) I Select Full control for this folder sub folders and files ( you can fiddle here if you want to restrict more) Close that all off. To publish FTP Site to extranet or internet: Click on FTP server (not site)>Click FTP Firewall Support, Type preferred port range and IP address of external NIC of TMG server. To Install Certificate for Secure FTPS To Publish FTP site from Forefront TMG 2010: you can publish ftp server using non-web publishing rule. To do this, right click on firewall policy>new>create non web publishing policy. Apply changes. Click ok. right click on newly firewall policy>click configure ftp>uncheck Read only>Apply and ok. Apply changes. Click on System>Application Filters>FTP Access Filter>click Allow active FTP access. Apply and ok. To Create FTP access rules in Forefront TMG 2010: Create another rule allowing ftp for internal networks. Test FTP connections using any ftp client. In conclusion, this is a test ftp server, there are lot more to do in terms of securing ftp and publishing for individual users.
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Konfiguracija FF TMG 2010 kao SOCKS proxy U ovom članku ću pisati o SOCKS proxy i primjenu SOCKS proxy u poduzeću. omogućuje početi s SOCKS proxy. Socket Secure (čarape) je Internet protokol koji usmjerava pakete između klijenta i poslužitelja kroz proxy poslužitelja. SOCKS proxy poslužitelji će TCP veze s proizvoljnim IP adrese, kao i pružanje sredstva za UDP paketa biti proslijeđen. SOCKS nastupa na Layer 5. OSI modela -session sloja. U jednostavnim uvjetima, čarape je IETF odobreni standard za TCP / IP based umrežavanje aplikacije. SOCKS proxy pruža mogućnost da dopusti promet biti obrađene od strane punomoćnika za one aplikacije (IM, ICQ) koji nemaju prirodna sposobnost za postavljanje proxy parametre. Dopustite mi objasniti naprijed proxy ili proxy poslužitelj. Proxy poslužitelj je funkcija primiti zahtjev od web pregledniku ili klijentu, obavljati taj zahtjev (eventualno nakon autorizacije provjere), i vratiti rezultate u pregledniku ili klijentu. Prednosti proxy je IP adrese ili imena internih sustava nikada se ne pojavljuju na internetu, internet vidjeti adresu proxy poslužitelja. Dakle, napadači ne mogu koristiti adrese dobiti informacije o vašim internim sustava imenima i strukturi mreže. Zahtjevi za određene web stranice može biti ograničen ili zabranjen. Web proxy poslužitelji obično podržavaju mnoge protokole, uključujući HTTP, FTP, Gopher, HTTPS. Kako SOCKS poslužitelj radi? Proxy poslužitelji mogu sami koristiti SOCKS protokol pružiti dodatnu sigurnost. SOCKS proxy dodati sloj kućištima u zahtjeva od klijenta i proslijediti upakiranog zahtjev do odredišta. Prednosti: - Encapsulating bilo TCP protokol unutar SOCKS protokol. Na klijentskom sustavu, unutar korporativne mreže, paketi podataka biti poslana na ili iz vanjskog sustava će se staviti unutar SOCKS paketa i poslan u SOCKS poslužitelj. - Vraćanje paketi će biti poslan na SOCKS poslužitelj, koji će ih zatvoriti u kućište slično i proći na izvornom klijenta, koji se otkloni SOCKS enkapsulaciju, dajući potrebne podatke. Nedostaci: - Prednost od svega je to da firewall može biti vrlo jednostavno konfigurirati, kako bi se omogućilo bilo TCP / IP vezu na bilo kojoj luci, od SOCKS poslužitelj non-Secure Internet, vjerujući da opovrgavati nikakve veze koje su pokrenute s Interneta. - Nedostaci su da preglednik konfiguracija je složeniji, dodao transferi podataka može dodati dodatni kašnjenja stranice pristupa, a ponekad i opunomoćenike nametnuti dodatna ograničenja kao što je time-out na duljinu veze, sprečavanje vrlo velike preuzimanja. Microsoft FF TMG 2010 može se obavljati kao SOCKS poslužitelj ili SOCKS Gateway ili SOCKS proxy. Za konfiguriranje Microsoft FF TMG 2010 kao SOCKS pristupnika. Prijavite se na FF TMG 2010> Otvoreno TMG upravljanje konzole> Kliknite na System> Kliknite na Application Filter> desni klik SOCKS4 Filter> kliknite Omogući Primijeni izmjene> Kliknite OK. Pravo Kliknite SOCKS4 Filter> Kliknite Omogući> Kliknite nekretnine. Držite broj porta> Odaberite mrežu gdje čarape će zahtjev potječe. Na primjer internoj mreži. Kliknite U redu. Primijeni izmjene> Kliknite OK. Sada stvoriti politiku firewall kako bi se omogućilo SOCKS komunikaciju između izvora i odredišta. Na primjer ovdje sam stvorio politike otvaranja SOCKS port između internoj mreži i SOCKS pristupnika koji je moj proxy poslužitelj. Primijeni promjene. Kliknite U redu. Evo screenshot pokazuje ICQ protokol dostupan u TMG 2010 protokolima. Ako ne vidite željeni protokol na popisu. možete dodati korisnički definirane protokol jednostavnim dodavanjem novog protokola. za ICQ komunikacije, morate stvoriti pravilo navodeći izvor i odredište i protokol koji omogućuje. Da Konfiguracija FTP čarape veza podesiti općenite postavke Cute FTP ili pojedinih postavki veze u svakom veza prikazanih u nastavku. Za konfiguriranje proxy postavke u IE. Otvorite IE> Kliknite Alati> Internet opcije Kliknite> Kliknite Veze> Kliknite LAN Postavke> Kliknite proxy postavke i dodati SOCKS pristupnika ili SOCKS proxy poslužitelja pojedinosti. Možete konfigurirati SOCKS proxy preko GPO. Stvaranje i Veza GPO s OU> Desni klik na GPO> Kliknite Edit> navigaciju za User konfiguraciji \ windows postavke \ Internet Explorer održavanje Proširi Internet Explorer čvor održavanja, au priključnom dijelu, dvokliknite Proxy postavke. Možete definirati postavke proxy za korisnike. Za konfiguriranje ICQ, Kliknite na gumb Main> odaberite Preferences> Kliknite Connections. Kliknite na Firewall kartici i odaberite SOCKS4 - Tip proxy IP Adresa u hostiji - Tip u punomoćnika Luka 1080 - Tip korisničko ime i lozinku u Authentication - Nanesite i kliknite OK