Port 7228 (citrixupp)

IANA assigns port 7228 to citrixupp: Citrix Universal Printing Port.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference

citrixupp TCP Citrix Universal Printing Port Gary Barton -

Registry dates for this port: registered 2011-02-24.

Linux: is anything listening on TCP 7228?

sudo ss -tlnp 'sport = :7228'

Linux / macOS: which process owns the port

sudo lsof -nP -i :7228

Older Linux / BSD (net-tools)

sudo netstat -tlnp | grep ':7228 '

Windows (Command Prompt)

netstat -ano | findstr :7228

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 7228 -State Listen | Select LocalAddress,OwningProcess

From another machine

nc -vz -w 5 HOST 7228

From Windows

Test-NetConnection HOST -Port 7228

ufw

sudo ufw deny 7228/tcp

iptables

sudo iptables -A INPUT -p tcp --dport 7228 -j DROP

nftables

sudo nft add rule inet filter input tcp dport 7228 drop

Windows Firewall

New-NetFirewallRule -DisplayName 'Block TCP 7228' -Direction Inbound -Protocol TCP -LocalPort 7228 -Action Block

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