What are the different types of remote access methods?
Remote Access Control MethodsDirect (Physical) Line. The first direct remote access control that can be implemented is a direct line from a computer to the company's LAN. ... Virtual Private Network. Another method which is more common is establishing a VPN. ... Deploying Microsoft RDS.
What are the five popular protocols?
Popular Network ProtocolsOverview. ... Introduction to the Network Protocol. ... Ethernet. ... Internet Protocol (IP) ... Internet Control Message Protocol (ICMP) ... Address Resolution Protocol (ARP) ... Transmission Control Protocol (TCP) ... User Datagram Protocol (UDP)More items...•
Which protocol would be best to access the remote network devices?
Telnet is designed for remote connectivity, and it establishes connections between a remote endpoint and a host machine to enable a remote session. Telnet prompts the user at the remote endpoint to log on and, once authenticated, gives the endpoint access to network resources and data at the host computer.
What are the 3 major protocol?
There are three main types of network protocols, including network management protocols, network communication protocols and network security protocols.
What are the four types of protocols?
Common Internet protocols include TCP/IP (Transmission Control Protocol/Internet Protocol), UDP/IP (User Datagram Protocol/Internet Protocol), HTTP (HyperText Transfer Protocol) and FTP (File Transfer Protocol).
What are the different types of protocols?
Types of ProtocolsTransmission Control Protocol (TCP)Internet Protocol (IP)User Datagram Protocol (UDP)Post office Protocol (POP)Simple mail transport Protocol (SMTP)File Transfer Protocol (FTP)Hyper Text Transfer Protocol (HTTP)Hyper Text Transfer Protocol Secure (HTTPS)More items...
What is a remote login protocol?
The rlogin user command and the rlogind daemon provide the remote login protocol, allowing users to log in to a remote host and use their terminals as if they were directly connected to the remote host.
What OSI layer is RDP?
It allows RDP to communicate through and manage multiple channels. Sending and receiving data through the RDP stack is essentially the same as the 7 layer OSI model for communication.
What are the types of protocol?
Different Types of Networking ProtocolsHTTP or HTTPs. This stands for Hypertext Transfer Protocol or Hypertext Transfer Protocol (secure). ... FTP (File Transfer Protocol) ... Email Protocols (POP3, IMAP, SMTP) ... TCP(Transmission Control Protocol) and UDP(User Datagram Protocol)
What is common protocol?
The three most common protocols are the Time Protocol, the Daytime Protocol, and the Network Time Protocol (NTP). An Internet time server waits for timing requests sent using any of these protocols and sends a time code in the correct format when a request is received.
What is the most widely used protocol?
TCP IP is the most widely used communications protocol.
What is the most common protocol on the Internet?
HyperText Transfer Protocol/Secure (HTTP/S) It is used for secure communication on a computer network.
What is the protocol used to create a remote access server?
Some common remote access and virtual private network (VPN) tunneling protocols include: PPP. Point-to-Point Protocol is used to create dial-up connections between a dial-up client and a remote access server, or between a dial-up client and an Internet Service Provider (ISP). IPsec.
What port does PPTP use?
PPTP. Point-to-Point Tunneling Protocol is a tunneling protocol used with VPNs that has some known vulnerabilities. PPTP uses TCP port 17 23. L2TP. Layer 2 Tunneling Protocol combines the strengths of Layer 2 Forwarding (L2F) and PPTP.
What are the different authentication mechanisms?
The different authentication mechanisms that may be used with remote access services are: 1 PAP. Password Authentication Protocol. Passwords are sent in clear text so PAP is rarely used today. 2 CHAP. Challenge Handshake Authentication Protocol. CHAP uses a handshake process where the server challenges the client. The client then responds with appropriate authentication information. 3 MS-CHAP. Microsoft’s implementation of CHAP, which is used only by Microsoft clients. 4 MS-CHAPv2. An improvement over MS-CHAP. A significant improvement of MS-CHAPv2 over MS-CHAP is the ability to perform mutual authentication. 5 RADIUS. Remote Authentication Dial-In User Service. Radius provides a centralized method of authentication for multiple remote access services servers. RADIUS encrypts the password packets, but not the entire authentication process. 6 TACACS and XTACACS. Terminal Access Controller Access-Control System (TACACS) is a remote authentication protocol that was commonly used in UNIX networks. Extended TACACS (XTACACS) is an improvement over TACACS developed by Cisco Systems and is proprietary to Cisco systems. Neither of these are commonly used today with most organizations using either RADIUS or TACACS+. 7 TACACS+. Terminal Access Controller Access-Control System+ (TACACS) is an alternative to RADIUS and is proprietary to Cisco systems. A benefit of TACACS+ is that it can interact with Kerberos allowing it to work with a broader range of environments including Microsoft. Additionally, TACACS+ encrypts the entire authentication process (RADIUS encrypts only the password).
What port does Cisco VPN use?
TACACS+ has wider uses including as an authentication service for network devices. TACACS+ uses TCP port 49 .
What is L2TP tunneling?
Layer 2 Tunneling Protocol combines the strengths of Layer 2 Forwarding (L2F) and PPTP. L2TP is commonly used with IPsec for VPNs. Since NAT is not compatible with IPsec, L2TP/IPsec can’t go through a device running NAT. L2TP uses UDP port 1701. RADIUS.
What is VPN access?
A VPN allows a client to access a private network over a public network (such as the Internet). Remote access methods are useful for personnel that need access to the private network from remote locations.
What is RAS in network?
Remote Access Services (RAS) are used to provide access to an internal network from an outside source . The previous section covered some of the protocols used for remote access connections, but this section covers different authentication mechanisms that can be used with RAS.
What is PPP protocol?
Point-to-Point Protocol (PPP) PPP is used to implement TCP/IP over point-to-point connections (for example, serial and parallel connections). It is most commonly used for remote connections to ISPs and LANs. PPP uses the Link Control Protocol (LCP) to communicate between PPP client and host. LCP tests the link between client and PPP host ...
What is a RAS router?
RAS is used in smaller networks where a dedicated dial-up router is not practical or possible. In a RAS setup, you can basically connect a modem to a Windows NT or Windows 2000 server and, by way of the RAS, configure that modem as dial-out only, dial-up only, or a combination.
How to use PPTP?
To use PPTP, you set up a PPP session between the client and server, typically over the Internet. Once the session is established, you create a second dial-up session that dials through the existing PPP session, using PPTP. The PPTP session tunnels through the existing PPP connection , creating a secure session.
How does PPTP work?
PPTP is both simple and secure. To use PPTP, you set up a PPP session between the client and server, typically over the Internet.
What is RAS in Windows 2000?
Windows Remote Access Services (RAS) Both Windows NT and Windows 2000 include technology to allow users to dial up a server and connect to not only that server, but also to that server’s host network. This technology is known as RAS.
What is LCP in PPP?
LCP tests the link between client and PPP host and specifies PPP client configuration. PPP can support several network protocols, and because it features error checking and can run over many types of physical media, PPP has almost completely replaced SLIP.
What is DHCP used for?
DHCP is the protocol within the TCP/IP protocol stack that is used to assign TCP/IP addressing information, including host IP address, subnet mask, and DNS configuration. This information can be assigned over a LAN connection or a dial-up connection.
What is a RAS modem?
Both Windows NT and Windows 2000 include technology to allow users to dial up a server and connect to not only that server, but also to that server’s host network. This technology is known as RAS. RAS is used in smaller networks where a dedicated dial-up router is not practical or possible. In a RAS setup, you can basically connect a modem to a Windows NT or Windows 2000 server and, by way of the RAS, configure that modem as dial-out only, dial-up only, or a combination.
What is RDP in Citrix?
Remote Desktop Protocol (RDP) The Remote Desktop Protocol (RDP) is very similar to the Independent Computing Architecture (ICA) protocol used by Citrix products. As a matter of fact, RDP is used to access Windows Terminal Services, a close relative of the Citrix WinFrame product line.
How to use PPTP?
To use PPTP, you set up a PPP session between the client and server, typically over the Internet. Once the session is established, you create a second dial-up session that dials through the existing PPP session using PPTP. The PPTP session tunnels through the existing PPP connection, creating a secure session.
What is LCP in PPP?
LCP tests the link between client and PPP host and specifies PPP client configuration. Through LCP, PPP also supports authentication negotiation, as well as negotiation of encryption and compression between client and server, using compression control protocols (CCPs) and encryption control protocols (ECPs).
What is PPTP in a network?
PPTP is the Microsoft-created protocol based on PPP. It is used to create virtual connections across the Internet using TCP/IP and PPP so that two networks can use the Internet as their WAN link and yet retain private network security. PPTP is both simple and secure.
What is PPP used for?
PPP is used to implement TCP/IP; it is the protocol that establishes a connection over point-to point links (for example, dial-up and dedicated leased lines). It is most commonly used for remote connections to ISPs and LANs.
What is the difference between ICA and RDP?
RDP provides remote access for Windows clients only , whereas ICA provides it for multiple platforms, including DOS, Linux, Macintosh and many others. ICA is also a much more full-featured platform, including support for automatic client updates, publishing an application to a web browser, and much more.
What are the two methods of remote access?
First, you need to consider two distinct methods of remote access, each of which uses different protocols: Dial-up. Virtual private networking (VPN) Within each method, there are three basic categories for protocols: Connectivity. Authentication.
How to make sense of all the protocol configuration options involved in setting up remote access servers?
To help make sense of all the protocol configuration options involved in setting up remote access servers, take a look at the categories of protocols and the advantages and disadvantages of the various protocols within each one.
What protocol is used for dial up encryption?
For data encryption in a dial-up session in a Windows network. In order to use MPPE, the authentication protocol for the dial-up session must be either EAP-TLS or MS-CHAP version 1 or 2. VPN protocols.
Why do you want to be encrypted in a remote session?
First, you want the best security you can provide for the remote session. You want authentication to be encrypted so that someone who is snooping cannot see it , and you want the data that is passed in the remote session to be encrypted for the same reason. Second, older systems and their associated protocols are less capable in terms ...
How does dial up authentication work?
Authenticating the user. Part of the dial-up process involves authentication, usually by providing a password. Since that password can be intercepted and used to gain unauthorized access, it should be encrypted using the strongest possible method that is supported by both the server and the client.
What is link encryption?
With link encryption, the data is encrypted only on the link (i.e., only to the remote access server); with end-to-end encryption, the data is encrypted from the client application to the server hosting the resource being accessed.
Does L2TP require certificates?
Its use with L2TP will also require computer certificates provided by the Public Key Infrastructure. Provides end-to-end encryption. Bottom line. When planning and configuring a remote access environment, you need to know what protocols the clients and servers will be using.
What is remote access software?
A remote access software is a tool that allows you to access another computer from a remote location. From there, you can now access files, use apps, and even perform administrative tasks on the remote computer as if you’re in front of it.
Can remote desktop access restrict access to sensitive data?
Remote Desktop Access software also can restrict users to access sensitive and confidential data. You can also disable file transfer features on remote access software when there’s no reason for your employees to do so.
Can a VPN be exposed to a security threat?
A VPN can still be exposed to a bunch of security threats outside of a company’s network. A report from Trustwave found that the majority of the data breaches it investigated in 2011 were associated with a VPN connection. One alternative option for a VPN is remote access software. A remote access software is a tool that allows you ...
How many Group Policy Objects are required for remote access?
To deploy Remote Access, you require a minimum of two Group Policy Objects. One Group Policy Object contains settings for the Remote Access server, and one contains settings for DirectAccess client computers. When you configure Remote Access, the wizard automatically creates the required Group Policy Objects.
What domain is Remote Access Server?
The Remote Access server and all DirectAccess client computers must be joined to an Active Directory domain . DirectAccess client computers must be a member of one of the following domain types:
How to join a remote server to a domain?
To join the Remote Access server to a domain. In Server Manager, click Local Server. In the details pane, click the link next to Computer name. In the System Properties dialog box, click the Computer Name tab, and then click Change.
What happens when you configure a website on a remote server?
If the network location server website is located on the Remote Access server, a website will be created automatically when you configure Remote Access and it is bound to the server certificate that you provide. There are two certificate options for the network location server certificate: Private. Note.
What are DirectAccess settings?
The DirectAccess settings that are contained in the client computer Group Policy Object are applied only to computers that are members of the security groups that you specify when configuring Remote Access.
Does a website need to be on a high availability server?
Set up a website on a high availability server. The website does not require any content, but when you test it, you might define a default page that provides a message when clients connect. This step is not required if the network location server website is hosted on the Remote Access server.
Can you use Kerberos authentication on Remote Access Server 2012?
With Remote Access in Windows Server 2012 , you to choose between using certificates for computer authentication or using a built-in Kerberos authentication that uses user names and passwords. You must also configure an IP-HTTPS certificate on the Remote Access server. This section explains how to configure these certificates.
Why is RDP used in Windows NT?
One reason that Microsoft decided to implement RDP for connectivity purposes within Windows NT Terminal Server is that it provides an extensible base to build many more capabilities. RDP provides 64,000 separate channels for data transmission. However, current transmission activities are only using a single channel (for keyboard, mouse, ...
What is RDP in TCP?
RDP was developed to be entirely independent of its underlying transport stack, in this case TCP/IP. It means that we can add other transport drivers for other network protocols as customers needs for them grow, with little or no significant changes to the foundational parts of the protocol.
What is MCS in RDP?
The MCS is made up of two standards: It essentially abstracts the multiple RDP stacks into a single entity, from the perspective of the GCC. GCC is responsible for management of those multiple channels. The GCC allows the creation and deletion of session connections and controls resources provided by MCS.
What is RDP in Microsoft?
highly encrypted data, such as keyboard, mouse activity. RDP is an extension of the core T.Share protocol. Several other capabilities are retained as part of the RDP, such as the architectural features necessary to support multipoint (multiparty sessions).
What is RDP in computer?
However, current transmission activities are only using a single channel (for keyboard, mouse, and presentation data). RDP is designed to support many different types of Network topologies, such as ISDN, POTS. RDP is also designed to support many LAN protocols, such as IPX, NetBIOS, TCP/IP.
Does RDP support TCP/IP?
RDP is also designed to support many LAN protocols, such as IPX, NetBIOS, TCP/IP. The current version of RDP will only run over TCP/IP. With customer feedback, other protocol support may be added in future versions.
What is LDAP protocol?
Lightweight Directory Access Protocol (LDAP) : LDAP refers to Lightweight Directory Access Protocol. It is a protocol that is used for determining any individuals, organizations, and other devices during a network regardless of being on public or corporate internet.
What is Kerberos protocol?
It is designed for executing strong authentication while reporting to applications . The overall implementation of the Kerberos protocol is openly available by MIT and is used in many mass-produced products.
Serial Line Internet Protocol (Slip)`
Point-To-Point Protocol
- PPP is a remote access protocol that allows you to implement TCP/IP. It establishes a connection via point-to-point links (i.e., dedicated leased lines and dial-up). PPP is used most often for remote connections to LANs and ISPs. PPP utilizes the Link Control Protocol (LCP), which tests the link between client and PPP host and specifies PPP client configuration, to communicate between h…
Windows Remote Access Services
- Windows 2000 and Windows NT let users dial up a server and connect to both the server and the server’s host network. This is referred to as RAS, which is used in smaller networks where a dedicated dial-up router would not be possible or practical. With a RAS setup, you can connect a modem to a Windows 2000 or Windows NT server and configure the modem as dial-out only, di…
Remote Desktop Protocol
- Finally, there is the RDP, which is very similar to the Independent Computing Architecture (ICA) protocol used by Citrix products. RDP is utilized to access Windows Terminal Services, which is a close relative of the product line provided by Citrix WinFrame. RDP offers the same core functions as ICA, although there are some limitations. RDP provides remote access for Windows clients o…
Serial Line Internet Protocol
Point-To-Point Protocol
Point-To-Point Tunneling Protocol
Windows Remote Access Services
Independent Computing Architecture (ICA) Protocol
- A relatively new technology for remote access is the Citrix WinFrame (or MetaFrame) products (including Windows Terminal Server), which use the ICA protocol. Put simply, Citrix WinFrame allows multiple computers to take control of a virtual computer and use it as if it were their desktop. The advantage is that a company can put all of its time and ...