#NFT whale is back 🐳 #eCash $XEC is #Bitcoin $BTC, again thank you to @Joseinnewworld https://t.co/8xcMxBKFrv pic.twitter.com/BFeZMEfsfz
— Gaexe (@gaexe_) March 12, 2025
WAN is a computer network that has a wider coverage area. An example of WAN is the internet.
WAN connection types can be divided into;
| Akronim WAN | Nama WAN | Bandwidth Maksimum | Penggunaan | Tipe Pelayanan (service) |
|-----------------------|--------------------------------------------|-----------------------------|--------------------------------------------------|--------------------------|
| POTS | Plain Old Telephone Service | 4 KHz analog | Standar | Circuit Switching |
| ISDN | Integrated Services Digital Network | 128 Kbps | Data dan voice secara bersamaan | |
| X.25 | X.25 | | Radio Paket, workshore | Packet- Swithing |
| Frame Relay | Frame Relay | 1.544Mbps | Flexible workshore | |
| ATM | Asynchronous Transfer Mode | 622Mbps | High Power network | Cell-Swithing |
| SMDS | Switched Multimegabit Data Service | 1.544 & 44.736Mbps | MAN, variant dari ATM | |
| T1, T3, E1, E3 | T1, T3, E1, E3 | 1.544 & 44.736 Mbps | Telecomunication | Dedicated Digital |
| xDSL | Digital Subcriber Line | 384 kbps | Teknologi baru melalui line telepon | |
| Dial-up Modem | Modem | 56kbps | Teknologi lama yang menggunakan jalur telepon | Lainnya |
| Cable Modem | Cable Modem | 10Mbps | TV Kabel | |
| Terresterial Wireless | Wireless | <5Mbps | Microwave & link dengan laser | |
| Satellite Wireless | Wireless | <5Mbps | Microwave & link dengan laser | |
| SONET | Synchronous Optical Network | 9.992Mbps | Jaringan cepat menggunakan FO | |Devices used for WAN networks
Figure 3.15 WAN Devices
There are 2 ways to connect WAN devices, namely, connecting directly point-to-point or via other switching devices.
Figure 3.16 How to connect a WAN device
Meanwhile, in physical form, the WAN device will be connected as follows;
Figure 3.17 Physical connection form of WAN devices
Examples of WAN devices:
1. Serial Line IP (SLIP)
SLIP is a standard used in point-to-point networks with serial connections that run TCP/IP protocols, described in RFC 1055. This protocol has been replaced by the Point-to-Point Protocol (PPP). An example of a connection that uses SLIP is a connection between PCs using a null-modem.
2. Point-to-Point Protocol (PPP)
PPP is described in standard protocol number 51, and RFC 1661 and RFC 1662. PPP has 3 core components, namely:
- Using datagram encapsulation over serial links
- Link Control Protocol is used to connect, configure, and test data link connections.
- Network Control Protocol is used to connect different protocols.
The phases carried out to create a connection with PPP are:
- Link establishment and configuration negotiation
- Measuring the quality of links
- Authentication
- Network layer protocol configuration negotiation
- Link termination.
For other media, PPP uses encapsulation via PPP. Devices commonly used in PPP communications include modems.
Figure 3.18 Modem
Communication using a modem can be done as shown in Figure 3.19.
Figure 3.19 Connection using a Modem
Understanding Integrated Services Digital Network (ISDN)
This communication uses PPP encapsulation over ISDN, which is discussed in RFC1618.
ISDN Basic Rate Interface (BRI) supports 2 B-Channels with a capacity of 64kbps and 16kbps D-Channel is used for information control. B-Channel can only be used for voice or data only.
ISDN Primary Rate Interface (PRI) supports multiple B-Channels (usually 30) and 64kbps D-Channels.
ISDN devices use the DCE/DTE device type.
What is Look@LAN?
The rapid development of computer networks makes network security very important. This makes network security and monitoring very necessary. Therefore, I will review software for monitoring networks, namely Look@LAN.
Look@LAN is a software designed to monitor a local network called LAN (Local Area Network). This application is only used to view local computers, so it cannot monitor wider networks such as MAN and WAN.
By using this software we can use the facilities provided by this application such as viewing IP Address, Status, Distance, OS used, Hostname, netBIOS name, netBIOS user, SNMP status and Trap, Host information that is online/offline, NetBIOS and SNMP displayed in graphical form. Here I will show the installation procedure for Look@LAN software:
1. Click the LOOK@LAN installation icon then a display like the one below will appear then click next.
2. After that, a language selection dialog box will appear. There are 2 options. Once finished, click next.
3. Then the License Agreement dialog box will appear after reading it, then click I agree to the terms of this license agreement. And click next.
4. Here contains your User information, just fill in the Name and Company. Then click next.
5. After that, the installation folder dialog box will appear, which is where you will install the Look@LAN software. Once finished, click next.
6. After that, a dialog box will appear as below, click next.
7. Click next to start the installation process.
8. Wait a few moments until the installation is complete.
9. Immediately click next.
10. Click next.
11. Click finish to end the installation.
12. Run the Look@LAN program that was installed earlier, then it will appear like this, select Create New Profile.
13. And a display like this will appear, you have to fill in the Profile Name and Interface List, then click next.
14. After that, the program will scan the IP on the network and also the IP Address, Status, Distance, OS used, Hostname, netBIOS name, netBIOS user and SNMP on the network will be visible.
Please try.
Author Biography
M Jafar Noor Yudianto. When writing this article, he is currently studying D4 at Semarang State Polytechnic majoring in Electrical Engineering, Telecommunication D4 Study Program. Born on July 21, 1991 in Kudus City.