What are ports 135 139 used for?

What are ports 135 139 used for?

Microsoft Windows Networking Services

Port 135 is used for RPC client-server communication, and ports 139 and 445 are used for authentication and file sharing.

What port is 139 used for?

NetBIOS Session service
Port 139 is utilized by NetBIOS Session service. Enabling NetBIOS services provide access to shared resources like files and printers not only to your network computers but also to anyone across the internet.

What ports are vulnerable?

Common vulnerable ports include:

• FTP (20, 21)
• SSH (22)
• Telnet (23)
• SMTP (25)
• DNS (53)
• NetBIOS over TCP (137, 139)
• SMB (445)
• HTTP and HTTPS (80, 443, 8080, 8443)

Is port 139 a UDP?

Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) but unlike TCP on Port 139, UDP Port 139 is connectionless and does not guarantee reliable communication; it’s up to the application that received the message on Port 139 to process any errors and verify correct delivery.

What is port 445 commonly used for?

Port 445 is a traditional Microsoft networking port with tie-ins to the original NetBIOS service found in earlier versions of Windows OSes. Today, port 445 is used by Microsoft Directory Services for Active Directory (AD) and for the Server Message Block (SMB) protocol over TCP/IP.

What is TCP 445 used for?

TCP port 445 is used for direct TCP/IP MS Networking access without the need for a NetBIOS layer. This service is only implemented in the more recent verions Windows starting with Windows 2000 and Windows XP. The SMB (Server Message Block) protocol is used among other things for file sharing in Windows NT/2K/XP.

What is port 3389 commonly used for?

Remote Desktop Protocol (RDP) is a Microsoft proprietary protocol that enables remote connections to other computers, typically over TCP port 3389. It provides network access for a remote user over an encrypted channel.

How do I find out what ports are open on my network?

Answer: Open the Run command and type cmd to open the command prompt. Type: “netstat –na” and hit enter. Find port 445 under the Local Address and check the State. If it says Listening, your port is open.

What ports are needed for NFS?

Network File System (NFS) is used by UNIX clients for file access. NFS uses port 2049. NFSv3 and NFSv2 use the portmapper service on TCP or UDP port 111.

How do you find which ports are running?

Determine which program uses or blocks a port

1. Open a CMD prompt.
2. Type in the command: netstat -ano -p tcp.
3. You’ll get an output similar to this one.
4. Look-out for the TCP port in the Local Address list and note the corresponding PID number.

How do I find out someone’s IP and port?

The port number is “tacked on” to the end of the IP address, for example, “192.168. 1.67:80” shows both the IP address and port number.

How do I find the port number of a specific IP address?

How do I find the port number of a specific IP address? All you have to do is type “netstat -a” on Command Prompt and hit the Enter button. This will populate a list of your active TCP connections. The port numbers will be shown after the IP address and the two are separated by a colon.

Do I need port 111 for NFS?

Portmapper service is required to run NFS both on the client and the server-side. It runs on Port 111 for both TCP and UDP protocols.

What ports does NFS v4 use?

NFSv4 runs on TCP port 2049. The NFS server must accept incoming connections on this port. Unlike previous versions of NFS, this is the only port that is required.

How do I find my local port?

Type “Network Utility” in the search field and select Network Utility. Select Port Scan, enter an IP address or hostname in the text field, and specify a port range. Click Scan to begin the test. If a TCP port is open, it will be displayed here.

How can I tell if port 80 is being used?

To check what’s using Port 80:

1. Open Command Line and use netstat -aon | findstr :80. -a Displays all active connections and the TCP and UDP ports on which the computer is.
2. Then, to find which programs are using it, take the PID number and put them in tasklist /svc /FI “PID eq [PID Number]”
3. Closing programs should resolve.

How do I find someone’s port number?

The port number is “tacked on” to the end of the IP address, for example, “192.168. 1.67:80” shows both the IP address and port number. When data arrives at a device, the network software looks at the port number and sends it to the right program. To find a port address, review an app’s technical documentation.

How do I find my server port and address?

how do i find my ip address and port #

1. a. Click Start, click Run, and then type cmd and hit enter.
2. b. Type ipconfig and hit enter.
3. c. Look under the heading “Ethernet Adapter Local Area Connection” for the IP Address listed. For example, an IP address should have 4 sets of numbers like 193.267. 1.102.

What ports should be open for NFS?

NFS uses port 2049. NFSv3 and NFSv2 use the portmapper service on TCP or UDP port 111. The portmapper service is consulted to get the port numbers for services used with NFSv3 or NFSv2 protocols such as mountd, statd, and nlm.

What port 8080 is typically used for?

web servers
The port number 8080 is usually used for web servers, proxy and caching.

What is port 443 normally used for?

Port 443 is a virtual port that computers use to divert network traffic. Billions of people across the globe use it every single day. Any web search you make, your computer connects with a server that hosts that information and fetches it for you. This connection is made via a port – either HTTPS or HTTP port.

What are ports 80 and 443 used for?

Port 80 and 443 are ports generally associated with “the Internet”. Port 443/HTTPS is the HTTP protocol over TLS/SSL. Port 80/HTTP is the World Wide Web. Let’s face it, port 80/443 are generally a given for being open on any type of filtering device allowing traffic outbound on your network.

How do you find out what is using a port?

How do I find out what ports are open on my IP?

All you have to do is type “netstat -a” on Command Prompt and hit the Enter button. This will populate a list of your active TCP connections. The port numbers will be shown after the IP address and the two are separated by a colon. For instance, if your IP address is something like 192.168.

What ports should I scan for?

Here are some common ports that you will find when using a port scanner:

• 25 Email (SMTP)
• 53 Domain Name Server.
• 80 Web Server (HTTP)
• 110 Email Server (POP3)
• 143 Email Server (IMAP)
• 443 Web Server (HTTPS)
• 445 Windows Communication Protocol (File Sharing etc)
• 8080 Proxy Server.