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Port 6320 (repsvc)

IANA assigns port 6320 to repsvc: Double-Take Replication Service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
repsvc TCP Double-Take Replication Service Carbonite Inc -
repsvc UDP Double-Take Replication Service Carbonite Inc -

Registry dates for this port: registered 2006-04, last modified 2019-08-23.

Check what is listening on port 6320

Linux: is anything listening on TCP 6320?
sudo ss -tlnp 'sport = :6320'
Linux: UDP 6320
sudo ss -ulnp 'sport = :6320'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6320
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6320 '
Windows (Command Prompt)
netstat -ano | findstr :6320
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6320 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6320
From Windows
Test-NetConnection HOST -Port 6320
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6320

Block port 6320 in the firewall

ufw
sudo ufw deny 6320/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6320 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6320 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6320' -Direction Inbound -Protocol TCP -LocalPort 6320 -Action Block
ufw
sudo ufw deny 6320/udp
iptables
sudo iptables -A INPUT -p udp --dport 6320 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6320 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6320' -Direction Inbound -Protocol UDP -LocalPort 6320 -Action Block

Related ports

6317nav-data-cmd, nav-data6318iona-data6321emp-server16322emp-server2

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