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Port 3836 (markem-dcp)

IANA assigns port 3836 to markem-dcp: MARKEM NEXTGEN DCP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
markem-dcp TCP MARKEM NEXTGEN DCP - -
markem-dcp UDP MARKEM NEXTGEN DCP - -

Check what is listening on port 3836

Linux: is anything listening on TCP 3836?
sudo ss -tlnp 'sport = :3836'
Linux: UDP 3836
sudo ss -ulnp 'sport = :3836'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3836
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3836 '
Windows (Command Prompt)
netstat -ano | findstr :3836
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3836 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3836
From Windows
Test-NetConnection HOST -Port 3836
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3836

Block port 3836 in the firewall

ufw
sudo ufw deny 3836/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3836 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3836 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3836' -Direction Inbound -Protocol TCP -LocalPort 3836 -Action Block
ufw
sudo ufw deny 3836/udp
iptables
sudo iptables -A INPUT -p udp --dport 3836 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3836 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3836' -Direction Inbound -Protocol UDP -LocalPort 3836 -Action Block

Related ports

3834spectardata3835spectardb3837mkm-discovery3838sos

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