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Port 2426 (vcmp)

IANA assigns port 2426 to vcmp: VeloCloud MultiPath Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vcmp TCP VeloCloud MultiPath Protocol
This port was previously removed on 2002-04-29. VeloCloud Networks -
vcmp UDP VeloCloud MultiPath Protocol
This port was previously removed on 2002-04-29. VeloCloud Networks -

Registry dates for this port: registered 2014-11-13.

Check what is listening on port 2426

Linux: is anything listening on TCP 2426?
sudo ss -tlnp 'sport = :2426'
Linux: UDP 2426
sudo ss -ulnp 'sport = :2426'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2426
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2426 '
Windows (Command Prompt)
netstat -ano | findstr :2426
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2426 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2426
From Windows
Test-NetConnection HOST -Port 2426
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2426

Block port 2426 in the firewall

ufw
sudo ufw deny 2426/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2426 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2426 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2426' -Direction Inbound -Protocol TCP -LocalPort 2426 -Action Block
ufw
sudo ufw deny 2426/udp
iptables
sudo iptables -A INPUT -p udp --dport 2426 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2426 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2426' -Direction Inbound -Protocol UDP -LocalPort 2426 -Action Block

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