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Port 5990 (wbem-exp-https)

IANA assigns port 5990 to wbem-exp-https: WBEM Export HTTPS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
wbem-exp-https TCP WBEM Export HTTPS Denise Eckstein -
wbem-exp-https UDP WBEM Export HTTPS Denise Eckstein -

Registry dates for this port: registered 2004-11.

Check what is listening on port 5990

Linux: is anything listening on TCP 5990?
sudo ss -tlnp 'sport = :5990'
Linux: UDP 5990
sudo ss -ulnp 'sport = :5990'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5990
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5990 '
Windows (Command Prompt)
netstat -ano | findstr :5990
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5990 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5990
From Windows
Test-NetConnection HOST -Port 5990
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5990

Block port 5990 in the firewall

ufw
sudo ufw deny 5990/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5990 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5990 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5990' -Direction Inbound -Protocol TCP -LocalPort 5990 -Action Block
ufw
sudo ufw deny 5990/udp
iptables
sudo iptables -A INPUT -p udp --dport 5990 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5990 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5990' -Direction Inbound -Protocol UDP -LocalPort 5990 -Action Block

Related ports

5988wbem-http5989wbem-https5991nuxsl5992consul-insight

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