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Services and TCP ports. Home > Online Help.

There are a number of different services and protocols in use on the Internet. The most commonly known is HTTP which is used by web servers to transmit requests and responses for unencrypted web pages. These services are set up to listen for requests on a numbered port. These services and protocols can use any port from 1 to 6. To keep things simple for everyone a large number of the more commonly used services started using a standardized list of ports.

For instance, though it is not required, by default, most web servers listen for HTTP requests on port 8. HTTP traffic to port 8. If you wish to use another port such as 8.

URL to indicate that you want the browser to use 8. Example. Default URL for HTTP traffic when the web server is listening on the standard HTTP port: http: //fortinet. URL to the same address when the web server is listening for HTTP traffic on port 8. Services represent typical traffic types and application packets that pass through the Forti. Gate unit. Firewall services define one or more protocols and port numbers associated with each service. Security policies use service definitions to match session types.

You can organize related services into service groups to simplify your security policy list. Many well- known traffic types have been predefined on the Forti. Gate unit. If there is a service that does not appear on the list you can create a service or edit an existing one. You need to know the ports, IP addresses or protocols of that particular service or application uses, to create a service. Best Practices. While you can edit a predefined service it is best to leave those ones alone and create a new service and name it something similar such as the same service name with a descriptive identifier appended. Based on the previous example, instead of the name “HTTP” you could name the service “HTTP8. HTTP- Application”.

Categories. In order to make sorting through the services easier there is a field to categorize the services. The services can be sorted into the following groups: Uncategorized. General. Web Access.

File Access. Email. Network Services.

Authentication. Remote Access. Tunnelling. Vo. IP, Messaging and Other Applications. Web Proxy. To create a new category, use the downward pointing arrow next to Create New in the Services window and choose Category.

All that will be required is a name for the new category. A comments describing the new category is optional. Protocol types. One of the fundamental aspects of a service is the type of protocol that use used to define it. When a service is defined one of the following categories of protocol needs to be determined: Depending on which of these protocol categories is choose another set of specifications will can also be defined. TCP/UDP/SCTPThis is the most commonly used service protocol category. Once this category has been selected the other available options to choose are an address, either IP or FQDN, and the protocol and port number. The protocol will be TCP, UDP or SCTP.

ICMP or ICMP6. When ICMP or ICMP6 is chosen the available options are the ICMP Type and its code. IPWhen IP is the chosen protocol type the addition option is the Protocol Number. TCPTransmission Control Protocol (TCP) is one of the core or fundamental protocols of the Internet. It is part of the Transport Layer of the OSI Model. It is designed to provide reliable delivery of data from a program on one device on the network or Internet to another program on another device on the network or Internet. TCP achieves its reliability because it is a connection based protocol.

TCP is stream- oriented. It transports streams of data reliably and in order. TCP establishes a prior connection link between the hosts before sending data. This is often referred to as the handshake.

Once the link is established the protocol uses checks to verify that the data transmitted. If an error check fails the data is retransmitted. This makes sure that the data is getting to the destination error free and in the correct order so that it can be put back together into a form that is identical to the way they were sent. TCP is configured more for reliability than for speed and because of this TCP will likely be slower than a connectionless protocol such as UDP.

This is why TCP is generally not used for real time applications such as voice communication or online gaming. Some of the applications that use TCP are: World Wide Web (HTTP and HTTPS)Email (SMTP, POP3, IMAP4)Remote administration (RDP)File transfer (FTP)UDPUser Datagram Protocol (UDP) like TCP is one of the core protocols of the Internet and part of the Transport Layer of the OSI Model. UDP is designed more for speed than reliability and is generally used for different applications than TCP. UDP sends messages, referred to as datagrams across the network or Internet to other hosts without establishing a prior communication link. In other words, there is no handshake. UDP is an unreliable service as the datagrams can arrive out of order, duplicated or go missing without any mechanism to verify them. UDP works on the assumption that any error checking is done by the application or is not necessary for the function of the application.

This way it avoids the overhead that is required to verify the integrity of the data. This lack of overhead improves the speed of the data transfer and is why UDP is often used by applications that are time sensitive in nature.

UDP's stateless nature is also great for applications that answer a large number of small queries from a large number of clients. Common uses for UDP are: Domain Name Resolution (DNS) Time (NTP)Streaming media (RTSP, RTP and RTCP)Telephone of the Internet (Vo. IP) File Transfer (TFTP)Logging (SNMP)Online games (GTP and OGP)SCTPStream Control Transmission Protocol (SCTP) is part of the Transport Layer of the OSI Model just like TCP and UDP and provides some of the features of both of those protocols. It is message or datagram orientated like UDP but it also ensures reliable sequential transport of data with congestion control like TCP.

SCTP provides the following services: Acknowledged error- free non- duplicated transfer of user data. Data fragmentation to conform to discovered path MTU size. Software Para Impresora Canon Pixma Mg2410 Software. Sequenced delivery of user messages within multiple streams, with an option for order- of- arrival delivery of individual user messages. Optional bundling of multiple user messages into a single SCTP packet.

Network- level fault tolerance through supporting of multi- homing at either or both ends of an association. Congestion avoidance behavior and resistance to flooding and masquerade attacks. SCTP uses multi- streaming to transport its messages which means that there can be several independent streams of messages traveling in parallel between the points of the transmission.

The data is sent out in larger chunks of data than is used by TCP just like UDP but the messages include a sequence number within each message in the same way that TCP does so that the data can be reassembled at the other end of the transmission in the correct sequence without the data having to arrive in the correct sequence. SCTP is effective as the transport protocol for applications that require monitoring and session- loss detection. For such applications, the SCTP path and session failure detection mechanisms actively monitor the connectivity of the session. SCTP differs from TCP in having multi- homing capabilities at either or both ends and several streams within a connection, typically referred to as an association. A TCP stream represents a sequence of bytes; an SCTP stream represents a sequence of messages.

Some common applications of SCTP include supporting transmission of the following protocols over IP networks: SCTP is important in 3. G and 4. G/LTE networks (for example, Home. Node. B = Femto. Cells)SS7 over IP (for example, for 3.

G mobile networks)SCTP is also defined and used for SIP over SCTP and H. Midnight Club La Complete Edition Secrets Silversands.