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Port 2049 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 2049 |
tcp,udp,sctp |
NFS |
Network File System (NFS) - remote filesystem access [RFC 1813] [RFC5665]. A commonly scanned and exploited attack vector. Normally, port scanning is needed to find which port this service runs on, but since most installations run NFS on this port, hackers/crackers can bypass fingerprinting and try this port directly.
shilp also uses port 2049 (UDP).
FreeBSD is vulnerable to a denial of service attack. A remote attacker could send a specially-crafted NFS Mount request to TCP port 2049 to cause a kernel panic, resulting in a denial of service.
References: [CVE-2006-0900] [BID-16838]
Stack-based buffer overflow in nfsd.exe in XLink Omni-NFS Server 5.2 allows remote attackers to execute arbitrary code via a crafted TCP packet to port 2049 (nfsd), as demonstrated by vd_xlink.pm.
References: [CVE-2006-5780] [BID-20941] [SECUNIA-22751]
Novell Netware is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the xnfs.nlm component when processing NFS requests. By sending a specially-crafted NFS RPC request to UDP port 2049, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the server to crash.
References: [XFDB-72199] |
SG
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| 2049 |
udp |
|
Network File System (official) |
Wikipedia
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| 2049 |
udp |
|
shilp (official) |
Wikipedia
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| 2049 |
tcp,udp |
nfs |
networked file system |
Nmap
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| 2049 |
tcp,udp |
nfs |
Network File System |
Neophasis
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| 2049 |
tcp,udp |
shilp |
shilp |
Neophasis
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| 2049 |
tcp,udp |
nfs |
Network File System - Sun Microsystems |
IANA
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| 2049 |
sctp |
nfs |
Network File System [RFC5665] |
IANA
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8 records found
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Related ports: 20049
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External Resources
SANS ISC: port 2049
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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