TCP 25
TCP port 25 protocol information and warnings.
Looking for information on Protocol TCP 25? This page will attempt to provide you with as much port information as possible on TCP Port 25.
TCP Port 25 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 25
Here is what we know about protocol TCP Port 25. If we do not have any information on port 25 in our database, a counter will be set for TCP port 25. After enough hits, we'll research this port and update the database.
If you have information on TCP port 25 that is not reflected in our database, please leave a comment or post your information on our Web Security Forum. We'll update our database so that the next user searching for port 25 will have the most accurate information.
PORT 25 - Information
| Port Number: | 25 |
| TCP / UDP: | TCP |
| Delivery: | Yes |
| Protocol / Name: | Gris Ajan smtp BSE Barok Antigen EmailPasswordSender NewAptworm WinSpy WinPC Terminator Tapiras Stukach Stealth ProMailtrojan Gip Naebi MoscowEmailtrojan MBT MagicHorse Kuang2 Iloveyou Hybris Hpteammail Happy99 EPSII Shtirlitz |
| Port Description: | Gris Ajan Simple Mail Transfer. Used by mail servers to receive inbound email. Security Concerns: Email servers are complex engines, often run as root, and required open at most network perimeters. Thus are popular for attackers and new DOS or intrusion hacks always being found. Disable on non-mail server hosts. Open at perimeter only with static route to internal mail server. BSE Barok Antigen Email Password Sender - EPS NewApt worm WinSpy WinPC Terminator Tapiras Stukach Stealth ProMail trojan Gip Naebi Moscow Email trojan MBT (Mail Bombing Trojan) Magic Horse Kuang2 I love you Hybris Hpteam mail Happy99 EPS II Shtirlitz |
| Virus / Trojan: | Yes, Caution! Use our free Anonymous Surfing and Firewall Test. |
Side note: TCP port 25 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 25 in the same order in which they were sent. Guaranteed communication over port 25 is the key difference between TCP and UDP. UDP port 25 would not have guaranteed communication in the same way as TCP.
Because protocol TCP port 25 was flagged as a virus (colored red) does not mean that a virus is using port 25, but that a Trojan or Virus has used this port in the past to communicate.
TCP 25 - Disclaimer
We do our best to provide you with accurate information on PORT 25 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!