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Port 6842 (netmo-http)

IANA assigns port 6842 to netmo-http: Netmo HTTP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
netmo-http TCP Netmo HTTP Urs Bertschinger -
netmo-http UDP Netmo HTTP Urs Bertschinger -

Check what is listening on port 6842

Linux: is anything listening on TCP 6842?
sudo ss -tlnp 'sport = :6842'
Linux: UDP 6842
sudo ss -ulnp 'sport = :6842'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6842
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6842 '
Windows (Command Prompt)
netstat -ano | findstr :6842
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6842 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6842
From Windows
Test-NetConnection HOST -Port 6842
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6842

Block port 6842 in the firewall

ufw
sudo ufw deny 6842/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6842 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6842 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6842' -Direction Inbound -Protocol TCP -LocalPort 6842 -Action Block
ufw
sudo ufw deny 6842/udp
iptables
sudo iptables -A INPUT -p udp --dport 6842 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6842 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6842' -Direction Inbound -Protocol UDP -LocalPort 6842 -Action Block

Related ports

6831ambit-lm6841netmo-default6850iccrushmore6868acctopus-cc, acctopus-st

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