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Port 5055 (unot)

IANA assigns port 5055 to unot: UNOT.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
unot TCP UNOT Gordon Mohr 2 -
unot UDP UNOT Gordon Mohr 2 -

Check what is listening on port 5055

Linux: is anything listening on TCP 5055?
sudo ss -tlnp 'sport = :5055'
Linux: UDP 5055
sudo ss -ulnp 'sport = :5055'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5055
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5055 '
Windows (Command Prompt)
netstat -ano | findstr :5055
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5055 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5055
From Windows
Test-NetConnection HOST -Port 5055
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5055

Block port 5055 in the firewall

ufw
sudo ufw deny 5055/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5055 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5055 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5055' -Direction Inbound -Protocol TCP -LocalPort 5055 -Action Block
ufw
sudo ufw deny 5055/udp
iptables
sudo iptables -A INPUT -p udp --dport 5055 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5055 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5055' -Direction Inbound -Protocol UDP -LocalPort 5055 -Action Block

Related ports

5053rlm, rlm-disc5054rlm-admin5056intecom-ps15057intecom-ps2

All port numbers · Open port checker
Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.