For a cross-domain logon, where a computer is in one domain and the user account is in another domain, these protocols may be required for the client, the resource domain, and the account domain to communicate. ICMP is used for slow link detection. When you initiate remote group policy results reporting from a Windows Server computer, access to the destination computer's event log is required. See the Event Log section in this article for port requirements. Windows Server support the initiation of remote group policy update against Windows Server computers.
SSL is an open standard for establishing an encrypted communications channel to help prevent the interception of extremely important information, such as credit card numbers. Although this service works on other Internet services, it is primarily used to enable encrypted electronic financial transactions on the World Wide Web WWW.
Internet Authentication Service IAS performs centralized authentication, authorization, auditing, and accounting of users who are connecting to a network.
These users can be on a LAN connection or on a remote connection. This system service provides NAT, addressing, and name resolution services for all computers on your home network or your small-office network.
When the Internet Connection Sharing feature is enabled, your computer becomes an Internet gateway on the network. Other client computers can then share one connection to the Internet, such as a dial-up connection or a broadband connection.
They do not provide these services on the external network interface. When you use the Kerberos Key Distribution Center KDC system service, users can sign in to the network by using the Kerberos version 5 authentication protocol.
As in other implementations of the Kerberos protocol, the KDC is a single process that provides two services: the Authentication Service and the Ticket-Granting Service.
The Authentication Service issues ticket granting tickets, and the Ticket-Granting Service issues tickets for connection to computers in its own domain. The License Logging system service is a tool that was originally designed to help customers manage licenses for Microsoft server products that are licensed in the server client access license CAL model. By default, the License Logging service is disabled in Windows Server Because of legacy design constraints and evolving license terms and conditions, License Logging may not provide an accurate view of the total number of CALs that are purchased compared to the total number of CALs that are used on a particular server or across the enterprise.
License Logging is not included in Windows Server and later operating systems. We recommend that only users of the Microsoft Small Business Server family of operating systems enable this service on their servers.
The Message Queuing system service is a messaging infrastructure and development tool for creating distributed messaging programs for Windows. These programs can communicate across heterogeneous networks and can send messages between computers that may be temporarily unable to connect to one another. Message Queuing helps provide security, efficient routing, support for sending messages within transactions, priority-based messaging, and guaranteed message delivery.
The Microsoft POP3 service provides email transfer and retrieval services. Administrators can use this service to store and manage email accounts on the mail server. When you install POP3 service on the mail server, users can connect to the mail server and can retrieve email messages by using an email client that supports the POP3 protocol, such as Microsoft Outlook.
The Net Logon system service maintains a security channel between your computer and the domain controller to authenticate users and services. It passes the user's credentials to a domain controller and returns the domain security identifiers and the user rights for the user. This is typically known as pass-through authentication.
Net Logon is configured to start automatically only when a member computer or domain controller is joined to a domain. The NetMeeting Remote Desktop Sharing system service allows authorized users to use Windows NetMeeting to remotely access your Windows desktop from another personal computer over a corporate intranet. You must explicitly enable this service in NetMeeting. You can disable or shut down this feature by using an icon that is displayed in the Windows notification area.
Clients can use a news client, such as Microsoft Outlook Express, to retrieve newsgroups from the server and to read the headers or the bodies of the articles in each newsgroup. Offline Files and Roaming User Profiles cache user data to computers for offline use. These capabilities exist in all supported Microsoft operating systems. All of these systems use SMB. Folder Redirection redirects user data from the local computer to a remote file share, using SMB.
Primary Computer provides a capability to prevent data caching to computers that are not authorized by administrators for specific users. This system was added in Windows Server The Performance Logs and Alerts system service collects performance data from local or remote computers based on preconfigured schedule parameters and then writes that data to a log or triggers a message.
Based on the information that is contained in the named log collection setting, the Performance Logs and Alerts service starts and stops each named performance data collection. This service runs only if at least one performance data collection is scheduled.
The Print Spooler system service manages all local and network print queues and controls all print jobs. Print Spooler is the center of the Windows printing subsystem. The Remote Procedure Call RPC system service is an interprocess communication IPC mechanism that enables data exchange and invocation of functionality that is located in a different process.
Many services depend on the RPC service to start successfully. By default, this service is turned off. The Remote Storage Notification system service notifies users when they read from or write to files that are available only from a secondary storage media. Stopping this service prevents this notification.
The Remote Storage system service stores infrequently used files on a secondary storage medium. If you stop this service, users cannot move or retrieve files from the secondary storage media. Although the Routing and Remote Access service can use all the following protocols, the service typically uses only a few of them. For example, if you configure a VPN gateway that is behind a filtering router, you will probably use only one protocol.
For more information about this, see the References section. The Server system service provides RPC support and file sharing, print sharing, and named pipe sharing over the network. The Server service lets users share local resources, such as disks and printers, so that other users on the network can access them.
It also enables named pipe communication between programs that are running on the local computer and on other computers. Named pipe communication is memory that is reserved for the output of one process to be used as input for another process.
The input-accepting process does not have to be local to the computer. Preloaded Lmhosts entries will bypass the DNS resolver. Windows and newer clients can work over port The SharePoint Portal Server system service lets you develop an intelligent portal that seamlessly connects users, teams, and knowledge.
It helps people take advantage of relevant information across business processes. Microsoft SharePoint Portal Server provides an enterprise business solution that integrates information from various systems into one solution through single sign-on and enterprise application integration capabilities. It accepts and queues email messages for remote destinations, and it retries at set intervals.
Windows domain controllers use the SMTP service for intersite e-mail-based replication. SNMP Service includes agents that monitor activity in network devices and report to the network console workstation. SNMP Service provides a method of managing network hosts such as workstation or server computers, routers, bridges, and hubs from a centrally located computer that is running network management software. SNMP performs management services by using a distributed architecture of management systems and agents.
These messages are sent to a trap destination. For example, an agent can be configured to start an authentication trap if an unrecognized management system sends a request for information. The trap destination must be a network-enabled host that is running SNMP management software. SSDP Discovery Service manages receipt of device presence announcements, updates its cache, and sends these notifications to clients that have outstanding search requests. The registered event callbacks are then turned into subscription requests.
SSDP Discovery Service then monitors for event notifications and sends these requests to the registered callbacks.
This system service also provides periodic announcements to hosted devices. A Telnet server supports two kinds of authentication and supports the following kinds of terminals:. Terminal Services provides a multi-session environment that enables client devices to access a virtual Windows desktop session and Windows-based programs that are running on the server. Terminal Services enables multiple users to be connected interactively to a computer.
You should not map rpc through the firewall, as it is not secure, or efficient over slow links. ISA understands how RPC works hence it is able to accept the incomming connection request by the portmapper default port , inform the client of the port pseudo random high port to be used for the secondary connection AND inspect the content to ensure it IS the appropriate traffic type.
This is also true. Both are susceptible to network latency. I think the word "efficient" just came out with me really thinking about it.
Office Office Exchange Server. Not an IT pro? Sign in. United States English. Click 'Ok'. Step Three Click on 'Outbound connections' on the delivery tab. This will show you what outgoing SMTP port number you are configured to use - if your ISP is blocking port 25 enter port but even if they do not block it at the moment we still recommend using port anyway! Step Four In order to get mail to relay through our servers you will need to setup the 'Smart Host' setting on this screen.
This is what tells Exchange to delivery all mail destined for the internet though our servers. Enter the SMTP server name we gave - for example: mail. Any mail that is currently in the queue might not take these new settings so you might need to send a new piece of mail to test it.
After sending a test email you will want to check the outbound queue on Exchange to make sure that the mail did not get stuck in your outbound queue because of authentication errors.
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