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Port 5783 (3par-mgmt-ssl)

IANA assigns port 5783 to 3par-mgmt-ssl: 3PAR Management Service with SSL.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
3par-mgmt-ssl TCP 3PAR Management Service with SSL Don Marselle -
3par-mgmt-ssl UDP 3PAR Management Service with SSL Don Marselle -

Registry dates for this port: registered 2008-03-19.

Check what is listening on port 5783

Linux: is anything listening on TCP 5783?
sudo ss -tlnp 'sport = :5783'
Linux: UDP 5783
sudo ss -ulnp 'sport = :5783'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5783
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5783 '
Windows (Command Prompt)
netstat -ano | findstr :5783
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5783 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5783
From Windows
Test-NetConnection HOST -Port 5783
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5783

Block port 5783 in the firewall

ufw
sudo ufw deny 5783/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5783 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5783 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5783' -Direction Inbound -Protocol TCP -LocalPort 5783 -Action Block
ufw
sudo ufw deny 5783/udp
iptables
sudo iptables -A INPUT -p udp --dport 5783 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5783 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5783' -Direction Inbound -Protocol UDP -LocalPort 5783 -Action Block

Related ports

57813par-evts57823par-mgmt5784ibar57853par-rcopy

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