Looking for information on Protocol TCP 445? This page will attempt to provide you with as much port information as possible on TCP Port 445.
TCP Port 445 may use a defined protocol to communicate depending on the application. A protocol is a set of formalized rules that explains how data is communicated over a network. Think of it as the language spoken between computers to help them communicate more efficiently.
Protocol HTTP for example defines the format for communication between internet browsers and web sites. Another example is the IMAP protocol that defines the communication between IMAP email servers and clients or finally, the SSL protocol which states the format to use for encrypted communications.
TCP Port 445
Here is what we know about protocol TCP Port 445. If you have information on TCP port 445 that is not reflected on this page, simply leave a comment and we’ll update our information.
PORT 445 – Information
- Port Number: 445
- TCP / UDP: TCP
- Delivery: Yes
- Protocol / Name: microsoft-ds
- Port Description: SMB over TCP. The SMB (Server Message Block) protocol is used among other things for file sharing in Windows NT/2000/XP
- Virus / Trojan: No
Tip! Use our free Digital Footprint and Firewall Test to help verify you are not infected.
Side note: TCP port 445 uses the Transmission Control Protocol. TCP is one of the main protocols in TCP/IP networks. Whereas the IP protocol deals only with packets, TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and also guarantees that packets will be delivered on port 445 in the same order in which they were sent. Guaranteed communication over port 445 is the key difference between TCP and UDP. UDP port 445 would not have guaranteed communication in the same way as TCP.
Because protocol TCP port 445 was flagged as a virus (colored red) does not mean that a virus is using port 445, but that a Trojan or Virus has used this port in the past to communicate.
TCP 445 – Disclaimer
We do our best to provide you with accurate information on PORT 445 and work hard to keep our database up to date. This is a free service and accuracy is not guaranteed. We do our best to correct any errors and welcome feedback!
Hi,
how to test if port 445 i being blocked or not on the switch?
its very urgent please help.
Mohammad is correct, you most likely won’t need port 445.
I have disabled all TCP/IP ports on my server and in my firewall except one which I use to access the internet. Even then I don’t use the standard port 80, I use a different port# generated at random, and this port# changes automatically at random every time I enable access to the net, which will never be any port that has already been assigned.
This link gives a list of all ports already assigned and what they are used for as well as links to other resources.
en.wikipedia. org/wiki/List_of_TCP_and_UDP_port_numbers
I have disabled all IP ports in both the OS and the firewall, and disabled all UDP ports in both the OS and the firewall.
I have never had a problem accessing anything.
Any outgoing traffic that uses a disabled port the firewall asks for permission, any incoming traffic I just ignore them.
Network communication with one of the servers, if any. Try it and see, you can always turn it back on and chances are you don’t need it!
Port 445 is “SMB over IP” Server Message Block for file sharing in Windows NT/2000/XP
Port 445 has been used to hack Windows known as the ASN.1 vulnerability (MS04-007)
Worms that use this have the names of H32.HLLW.Lioten and the Torben B. Sørensen
i m doing my project and trying to block this port 445 through firewall in linux. What is the disadvantage if i block this port?