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Port 6868 (acctopus-cc, acctopus-st)

IANA assigns port 6868 to acctopus-cc, acctopus-st: Acctopus Command Channel.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
acctopus-cc TCP Acctopus Command Channel Stefan Auweiler -
acctopus-st UDP Acctopus Status Stefan Auweiler -

Registry dates for this port: registered 2009-11-16.

Check what is listening on port 6868

Linux: is anything listening on TCP 6868?
sudo ss -tlnp 'sport = :6868'
Linux: UDP 6868
sudo ss -ulnp 'sport = :6868'
Linux / macOS: which process owns the port
sudo lsof -nP -i :6868
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':6868 '
Windows (Command Prompt)
netstat -ano | findstr :6868
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 6868 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 6868
From Windows
Test-NetConnection HOST -Port 6868
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 6868

Block port 6868 in the firewall

ufw
sudo ufw deny 6868/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 6868 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 6868 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 6868' -Direction Inbound -Protocol TCP -LocalPort 6868 -Action Block
ufw
sudo ufw deny 6868/udp
iptables
sudo iptables -A INPUT -p udp --dport 6868 -j DROP
nftables
sudo nft add rule inet filter input udp dport 6868 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 6868' -Direction Inbound -Protocol UDP -LocalPort 6868 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.