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Port 6770 (plysrv-http)

IANA assigns port 6770 to plysrv-http: PolyServe http.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
plysrv-http TCP PolyServe http Mike Spitzer -
plysrv-http UDP PolyServe http Mike Spitzer -

Registry dates for this port: registered 2005-08.

Check what is listening on port 6770

Linux: is anything listening on TCP 6770?
sudo ss -tlnp 'sport = :6770'
Linux: UDP 6770
sudo ss -ulnp 'sport = :6770'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6770
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6770 '
Windows (Command Prompt)
netstat -ano | findstr :6770
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6770 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6770
From Windows
Test-NetConnection HOST -Port 6770
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6770

Block port 6770 in the firewall

ufw
sudo ufw deny 6770/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6770 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6770 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6770' -Direction Inbound -Protocol TCP -LocalPort 6770 -Action Block
ufw
sudo ufw deny 6770/udp
iptables
sudo iptables -A INPUT -p udp --dport 6770 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6770 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6770' -Direction Inbound -Protocol UDP -LocalPort 6770 -Action Block

Related ports

6768bmc-perf-mgrd6769adi-gxp-srvprt6771plysrv-https6777ntz-tracker

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