CyberHunter
LinkedIn profile - Bastien Cordier Email: contact@bastiencordier.pro
// Network services

Port 6350: App Discovery and Access Protocol

Port 6350 is assigned by IANA to adap (App Discovery and Access Protocol).

6350

How adap works

Network services
client:6350adapresponse client:6350adapresponse

The client sends a request to port 6350 and the adap service answers.

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
Network services
01 Security

Is port 6350 dangerous?

We have no specific security note for port 6350. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 6350

ServicePortTransportDescriptionReferenceUpdated
adap 6350 TCP, UDP App Discovery and Access Protocol - 2010-06-22

// source: IANA service name and port number registry

03 Check it

Which program uses port 6350, and is it reachable?

Linux

sudo ss -ltnup 'sport = :6350'      # process listening on 6350
sudo lsof -nP -i :6350

macOS

sudo lsof -nP -i :6350

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 6350 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 6350
netstat -ano | findstr :6350

From another machine

nmap -p 6350 -sV <host>
sudo nmap -sU -p 6350 <host>
nc -zv <host> 6350

Block it in the firewall

sudo ufw deny 6350/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 6350" -Direction Inbound -LocalPort 6350 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 6350 used for?

Port 6350 is assigned by IANA to adap (App Discovery and Access Protocol).

Is port 6350 TCP or UDP?

Port 6350 is registered for TCP and UDP.

Is it safe to open port 6350?

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. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 6350 is open?

On Linux run "ss -ltnup 'sport = :6350'", on macOS "lsof -nP -i :6350", and on Windows "netstat -ano | findstr :6350" to see the local process. From another machine, "nmap -p 6350 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

Latest vulnerability news

All news