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Port 1086 (cplscrambler-lg)

IANA assigns port 1086 to cplscrambler-lg: CPL Scrambler Logging.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
cplscrambler-lg TCP CPL Scrambler Logging - -
cplscrambler-lg UDP CPL Scrambler Logging - -

Check what is listening on port 1086

Linux: is anything listening on TCP 1086?
sudo ss -tlnp 'sport = :1086'
Linux: UDP 1086
sudo ss -ulnp 'sport = :1086'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1086
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1086 '
Windows (Command Prompt)
netstat -ano | findstr :1086
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1086 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1086
From Windows
Test-NetConnection HOST -Port 1086
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1086

Block port 1086 in the firewall

ufw
sudo ufw deny 1086/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1086 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1086 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1086' -Direction Inbound -Protocol TCP -LocalPort 1086 -Action Block
ufw
sudo ufw deny 1086/udp
iptables
sudo iptables -A INPUT -p udp --dport 1086 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1086 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1086' -Direction Inbound -Protocol UDP -LocalPort 1086 -Action Block

Related ports

1084ansoft-lm-21085webobjects1087cplscrambler-in1088cplscrambler-al

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