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// File transfer & sharing

Port 7000: file server itself

Port 7000 is assigned by IANA to afs3-fileserver (file server itself).

7000

How afs3-fileserver works

File transfer & sharing
client:70001/32/33/3afs3-fileserver client:70001/32/33/3afs3-fileserver

Files are sent over port 7000 in pieces and reassembled on the other side.

Transport
TCP · UDP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
File transfer & sharing
01 Security

Is port 7000 dangerous?

We have no specific security note for port 7000. Its risk depends on the program actually listening on it. General advice for file transfer & sharing services:

  • Prefer encrypted protocols (SFTP, FTPS, SMB 3 with encryption).
  • Disable anonymous access and restrict shares or exports to known hosts.
  • Never publish file sharing protocols to the Internet.
02 Registry

IANA registry entries for port 7000

ServicePortTransportDescriptionReferenceUpdated
afs3-fileserver 7000 TCP, UDP file server itself - -

// source: IANA service name and port number registry

03 Check it

Which program uses port 7000, and is it reachable?

Linux

sudo ss -ltnup 'sport = :7000'      # process listening on 7000
sudo lsof -nP -i :7000

macOS

sudo lsof -nP -i :7000

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7000 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 7000
netstat -ano | findstr :7000

From another machine

nmap -p 7000 -sV <host>
sudo nmap -sU -p 7000 <host>
nc -zv <host> 7000

Block it in the firewall

sudo ufw deny 7000/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 7000" -Direction Inbound -LocalPort 7000 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 7000 used for?

Port 7000 is assigned by IANA to afs3-fileserver (file server itself).

Is port 7000 TCP or UDP?

Port 7000 is registered for TCP and UDP.

Is it safe to open port 7000?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Prefer encrypted protocols (SFTP, FTPS, SMB 3 with encryption).

How do I check if port 7000 is open?

On Linux run "ss -ltnup 'sport = :7000'", on macOS "lsof -nP -i :7000", and on Windows "netstat -ano | findstr :7000" to see the local process. From another machine, "nmap -p 7000 <host>" shows whether it is reachable.

05 Related
:445 SMB tcp · udp · critical risk :21 FTP tcp · udp · sctp · high risk :139 NetBIOS Session tcp · udp · high risk :69 TFTP udp · tcp · high risk :2049 NFS tcp · udp · sctp · high risk :873 rsync tcp · udp · high risk :20 File Transfer [Default Data] tcp · udp · sctp :115 Simple File Transfer Protocol tcp · udp

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