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Port 3128 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 3128 |
tcp |
ndl-aas |
Port used by some proxy servers (3proxy). Common web proxy server ports: 8080, 80, 3128, 6588
Tatsoft default client connection also uses port 3128.
Trojans and backdoors that use this port: Masters Paradise, Reverse WWW Tunnel Backdoor, RingZero
W32.Mydoom.B@mm [Symantec-2004-012816-3647-99] (2004.01.28) - mass-mailing worm that opens a backdoor into the system. The backdoor makes use of TCP ports 80, 1080, 3128, 8080, and 10080.
W32.HLLW.Deadhat [Symantec-2004-020619-0805-99] (2004.02.06) - a worm with backdoor capabilities. It attempts to uninstall the W32.Mydoom.A@mm and W32.Mydoom.B@mm worms, and then it spreads to other systems infected with Mydoom. Also, it spreads through the Soulseek file-sharing program.
Multiple buffer overflows in Thomas Hauck Jana Server allow remote attackers to cause a denial of service and possibly execute arbitrary code via an HTTP GET request with a long major version number, an HTTP GET request to the HTTP proxy on port 3128 with a long major version number, a long OK reply from a POP3 server, and a long SMTP server response.
References: [CVE-2002-1061], [BID-5320]
Trojan.Win32.SkynetRef.x / Unauthenticated Open Proxy - the malware listens on TCP port 3128. Third-party attackers who can connect to the infected system can relay requests from the original connection to the destination and then back to the origination system. Attackers may then be able to launch attacks, download files or port scan third party systems and it will appear as the attacks originated from that infected host.
Active API Server Port (IANA official) |
SG
|
| 3128 |
tcp |
|
HTTP used by Web caches and the default for the Squid cache (unofficial) |
Wikipedia
|
| 3128 |
tcp |
trojan |
Reverse WWW Tunnel Backdoor , RingZero |
Trojans
|
| 3128 |
tcp |
squid-http |
Proxy Server |
SANS
|
| 3128 |
tcp |
squid-http |
squid-http |
Nmap
|
| 3128 |
tcp |
ReverseWWWTunnel |
[trojan] Reverse WWW Tunnel Backdoor |
Neophasis
|
| 3128 |
tcp |
RingZero |
[trojan] RingZero |
Neophasis
|
| 3128 |
tcp |
threat |
Mydoom |
Bekkoame
|
| 3128 |
tcp |
threat |
Reverse WWW Tunnel Backdoor |
Bekkoame
|
| 3128 |
tcp |
threat |
RingZero |
Bekkoame
|
| 3128 |
tcp |
threat |
W32.HLLW.Deadhat |
Bekkoame
|
| 3128 |
tcp,udp |
threat |
Squid |
Bekkoame
|
| 3128 |
tcp,udp |
ndl-aas |
Active API Server Port |
IANA
|
| 3074-3174 |
udp |
applications |
Rainbow Six Vegas |
Portforward
|
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14 records found
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jump to:
 |
Related ports: 1080 2766 3127 10080
« back to SG Ports
External Resources
SANS ISC: port 3128
Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify
a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly
used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.
TCP ports use the Transmission Control Protocol, the most commonly used protocol
on the Internet and any TCP/IP network. TCP enables two hosts
to establish a connection and exchange streams of data. TCP guarantees delivery of data
and that packets will be delivered in the same order in which they were sent.
Guaranteed communication/delivery is the key difference between TCP and UDP.
UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol)
and facilitates the transmission of datagrams from one computer to applications on another computer,
but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received
the message to process any errors and verify correct delivery. UDP is often used with time-sensitive
applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.
When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them.
This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command.
We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software.
For more detailed and personalized help please use our forums.
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