The Broadband Guide
search advanced
 forgot password?

Port 8181 Details

known port assignments and vulnerabilities
threat/application/port search:
Port(s) Protocol Service Details Source
8181 tcp trojans W32.Erkez.D@mm (2004.12.15) - mass mailing worm that can terminate processes, lower security settings, and allow remote access to the compromised computer. Opens a backdoor and listens for remote commands on port 8181/tcp.

Backdoor.Shangxing (2007.03.06) also uses this port.

The Web Administrator service (STEMWADM.EXE) in Websense Personal Email Manager 7.1 before Hotfix 4 and Email Security 7.1 before Hotfix 4 allows remote attackers to cause a denial of service (crash) by sending a HTTP GET request to TCP port 8181 and closing the socket before the service can send a response.
References: [CVE-2009-3749], [BID-36740]

IPSwitch IMail is an e-mail server which provides WWW (HTTP) E-mail services. By default this web service resides on port 8181 (TCP/UDP) or 8383 (TCP/UDP). Sending an HTTP request with an extremely long "HOST" field multiple times can cause the system hosting the service to become unresponsive. Each long request "kills" a thread without freeing up the memory used by it. By repeating this request, the system's resources can be used up completely.
References: [BID-2011]

IANA registered for: Intermapper network management system.
8181 tcp Zafi.D Zafi.D Backdoor SANS
8181 tcp Erkez.D Erkez.D Backdoor (same as Zafi.D) SANS
8181 tcp pix-devmng Cisco PIX Device Manager SANS
8181 tcp biblioTECH BiblioTECH Library System SANS
8181 tcp,udp threat W32.Erkez Bekkoame
8162-8191 tcp,udp Unassigned IANA
8150-8350 tcp,udp applications Y-cam Wireless IP Camera Portforward
8 records found
jump to:
previous next

Related ports: 8383  

« back to SG Ports

External Resources
SANS Internet Storm Center: port 8181

Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol. TCP is the most commonly used protocol on the Internet and any TCP/IP network. 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 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, a communications protocol for the Internet network, transport, and session layers. Like TCP (Transmission Control Protocol), UDP is used with IP (the Internet Protocol) and makes possible 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, where dropping some packets is preferable to waiting for delayed data.

Please use the "Add Comment" button below to provide additional information or comments about port 8181.
  Post your review/comments
Print this document top
News Glossary of Terms FAQs Polls Cool Links SpeedGuide Teams SG Premium Services SG Gear Store
Registry Tweaks Broadband Tools Downloads/Patches Broadband Hardware SG Ports Database Security Default Passwords User Stories
Broadband Routers Wireless Firewalls / VPNs Software Hardware User Reviews
Broadband Security Editorials General User Articles Quick Reference
Broadband Forums General Discussions
Advertising Awards Link to us Server Statistics Helping SG About