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Port 27782 (ars-vista)

IANA assigns port 27782 to ars-vista: ARS VISTA Application.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ars-vista TCP ARS VISTA Application Spencer Teran 2 -
ars-vista UDP ARS VISTA Application Spencer Teran 2 -

Registry dates for this port: registered 2004-11.

Check what is listening on port 27782

Linux: is anything listening on TCP 27782?
sudo ss -tlnp 'sport = :27782'
Linux: UDP 27782
sudo ss -ulnp 'sport = :27782'
Linux / macOS: which process owns the port
sudo lsof -nP -i :27782
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':27782 '
Windows (Command Prompt)
netstat -ano | findstr :27782
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 27782 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 27782
From Windows
Test-NetConnection HOST -Port 27782
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 27782

Block port 27782 in the firewall

ufw
sudo ufw deny 27782/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 27782 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 27782 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 27782' -Direction Inbound -Protocol TCP -LocalPort 27782 -Action Block
ufw
sudo ufw deny 27782/udp
iptables
sudo iptables -A INPUT -p udp --dport 27782 -j DROP
nftables
sudo nft add rule inet filter input udp dport 27782 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 27782' -Direction Inbound -Protocol UDP -LocalPort 27782 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.