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// File transfer & sharing

Port 8405: SuperVault Backup

Port 8405 is assigned by IANA to svbackup (SuperVault Backup).

8405

How svbackup works

File transfer & sharing
client:84051/32/33/3svbackup client:84051/32/33/3svbackup

Files are sent over port 8405 in pieces and reassembled on the other side.

Transport
TCP
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 8405 dangerous?

We have no specific security note for port 8405. 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 8405

ServicePortTransportDescriptionReferenceUpdated
svbackup 8405 TCP SuperVault Backup - 2011-08-01
-8405-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 8405, and is it reachable?

Linux

sudo ss -ltnup 'sport = :8405'      # process listening on 8405
sudo lsof -nP -i :8405

macOS

sudo lsof -nP -i :8405

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 8405 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 8405
netstat -ano | findstr :8405

From another machine

nmap -p 8405 -sV <host>
nc -zv <host> 8405

Block it in the firewall

sudo ufw deny 8405/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 8405" -Direction Inbound -LocalPort 8405 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 8405 used for?

Port 8405 is assigned by IANA to svbackup (SuperVault Backup).

Is port 8405 TCP or UDP?

Port 8405 is registered for TCP.

Is it safe to open port 8405?

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 8405 is open?

On Linux run "ss -ltnup 'sport = :8405'", on macOS "lsof -nP -i :8405", and on Windows "netstat -ano | findstr :8405" to see the local process. From another machine, "nmap -p 8405 <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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