Port 2638 Details

known port assignments and vulnerabilities
threat/application/port search:
Port(s) Protocol Service Details Source
2638 udp applications CiscoWorks Common Services could allow a remote attacker to obtain sensitive information, caused by an error in the Sybase SQL Anywhere database component. By sending a specially-crafted request to UDP port 2638, an attacker could exploit this vulnerability to obtain sensitive information about the engine name and database port.
References: [BID-50376] [CVE-2011-2042] [XFDB-71002]

Sybase Adaptive Server Anywhere Database Engine and earlier as included with Symantec Ghost 6.5 allows a remote attacker to create a denial of service by sending large (> 45Kb) amounts of data to port 2638.
References: [CVE-2001-0599] [BID-2572]

Port is also IANA registered for Sybase Anywhere
2638 tcp symantec Symantec Endpoint Protection Manager (SEPM) communicates with the embedded database on this port.

An issue was discovered in Siemens SICAM PAS before 8.00. A factory account with hard-coded passwords is present in the SICAM PAS installations. Attackers might gain privileged access to the database over Port 2638/TCP.
References: [CVE-2016-8567], [BID-94549]
2638 tcp sybase Sybase database SANS
2638 udp sybaseanywhere Sybase Anywhere SANS
2638 tcp sybase Sybase database Nmap
2638 tcp,udp sybaseanywhere Sybase Anywhere IANA
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External Resources
SANS Internet Storm Center: port 2638

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.

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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