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// Other services

Port 3705: Adobe Server 5

Port 3705 is assigned by IANA to adobeserver-5 (Adobe Server 5).

3705

How adobeserver-5 works

Other services
client:3705adobeserver-5response client:3705adobeserver-5response

The client sends a request to port 3705 and the adobeserver-5 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
Other services
01 Security

Is port 3705 dangerous?

We have no specific security note for port 3705. Its risk depends on the program actually listening on it. General advice for other services services:

  • Close the port if nothing on the host needs it.
  • Identify the process that listens on it (commands below) before opening it in a firewall.
  • Expose a service only to the networks that use it.
02 Registry

IANA registry entries for port 3705

ServicePortTransportDescriptionReferenceUpdated
adobeserver-5 3705 TCP, UDP Adobe Server 5 - 2008-01-14

// source: IANA service name and port number registry

03 Check it

Which program uses port 3705, and is it reachable?

Linux

sudo ss -ltnup 'sport = :3705'      # process listening on 3705
sudo lsof -nP -i :3705

macOS

sudo lsof -nP -i :3705

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 3705 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 3705
netstat -ano | findstr :3705

From another machine

nmap -p 3705 -sV <host>
sudo nmap -sU -p 3705 <host>
nc -zv <host> 3705

Block it in the firewall

sudo ufw deny 3705/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 3705" -Direction Inbound -LocalPort 3705 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 3705 used for?

Port 3705 is assigned by IANA to adobeserver-5 (Adobe Server 5).

Is port 3705 TCP or UDP?

Port 3705 is registered for TCP and UDP.

Is it safe to open port 3705?

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. Close the port if nothing on the host needs it.

How do I check if port 3705 is open?

On Linux run "ss -ltnup 'sport = :3705'", on macOS "lsof -nP -i :3705", and on Windows "netstat -ano | findstr :3705" to see the local process. From another machine, "nmap -p 3705 <host>" shows whether it is reachable.

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