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Port 2068 (avauthsrvprtcl)

IANA assigns port 2068 to avauthsrvprtcl: Avocent AuthSrv Protocol.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
avauthsrvprtcl TCP Avocent AuthSrv Protocol Steven W Clark 2 -
avauthsrvprtcl UDP Avocent AuthSrv Protocol Steven W Clark 2 -

Check what is listening on port 2068

Linux: is anything listening on TCP 2068?
sudo ss -tlnp 'sport = :2068'
Linux: UDP 2068
sudo ss -ulnp 'sport = :2068'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2068
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2068 '
Windows (Command Prompt)
netstat -ano | findstr :2068
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2068 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2068
From Windows
Test-NetConnection HOST -Port 2068
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2068

Block port 2068 in the firewall

ufw
sudo ufw deny 2068/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2068 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2068 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2068' -Direction Inbound -Protocol TCP -LocalPort 2068 -Action Block
ufw
sudo ufw deny 2068/udp
iptables
sudo iptables -A INPUT -p udp --dport 2068 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2068 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2068' -Direction Inbound -Protocol UDP -LocalPort 2068 -Action Block

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