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Port 7279 (ctxlic)

IANA assigns port 7279 to ctxlic: Citrix Licensing.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
ctxlic TCP Citrix Licensing Marc Binstock -
ctxlic UDP Citrix Licensing Marc Binstock -

Registry dates for this port: registered 2008-01-29.

Check what is listening on port 7279

Linux: is anything listening on TCP 7279?
sudo ss -tlnp 'sport = :7279'
Linux: UDP 7279
sudo ss -ulnp 'sport = :7279'
Linux / macOS: which process owns the port
sudo lsof -nP -i :7279
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':7279 '
Windows (Command Prompt)
netstat -ano | findstr :7279
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 7279 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 7279
From Windows
Test-NetConnection HOST -Port 7279
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 7279

Block port 7279 in the firewall

ufw
sudo ufw deny 7279/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 7279 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 7279 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 7279' -Direction Inbound -Protocol TCP -LocalPort 7279 -Action Block
ufw
sudo ufw deny 7279/udp
iptables
sudo iptables -A INPUT -p udp --dport 7279 -j DROP
nftables
sudo nft add rule inet filter input udp dport 7279 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 7279' -Direction Inbound -Protocol UDP -LocalPort 7279 -Action Block

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7277oma-ilp-s7278oma-dcdocbs7280itactionserver17281itactionserver2

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