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Port 3029 (LiebDevMgmt-A, LiebDevMgmt_A)

IANA assigns port 3029 to LiebDevMgmt-A, LiebDevMgmt_A: LiebDevMgmt_A IANA assigned this well-formed service name as a replacement for "LiebDevMgmt_A"..

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
LiebDevMgmt-A TCP LiebDevMgmt_A IANA assigned this well-formed service name as a replacement for "LiebDevMgmt_A". Mike Velten -
LiebDevMgmt_A TCP LiebDevMgmt_A
This entry is an alias to "LiebDevMgmt-A". This entry is now historic, not usable for use with many common service discovery mechanisms.
Mike Velten -
LiebDevMgmt-A UDP LiebDevMgmt_A IANA assigned this well-formed service name as a replacement for "LiebDevMgmt_A". Mike Velten -
LiebDevMgmt_A UDP LiebDevMgmt_A
This entry is an alias to "LiebDevMgmt-A". This entry is now historic, not usable for use with many common service discovery mechanisms.
Mike Velten -

Check what is listening on port 3029

Linux: is anything listening on TCP 3029?
sudo ss -tlnp 'sport = :3029'
Linux: UDP 3029
sudo ss -ulnp 'sport = :3029'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3029
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3029 '
Windows (Command Prompt)
netstat -ano | findstr :3029
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3029 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3029
From Windows
Test-NetConnection HOST -Port 3029
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3029

Block port 3029 in the firewall

ufw
sudo ufw deny 3029/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3029 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3029 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3029' -Direction Inbound -Protocol TCP -LocalPort 3029 -Action Block
ufw
sudo ufw deny 3029/udp
iptables
sudo iptables -A INPUT -p udp --dport 3029 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3029 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3029' -Direction Inbound -Protocol UDP -LocalPort 3029 -Action Block

Related ports

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