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Port 1049 (td-postman)

IANA assigns port 1049 to td-postman: Tobit David Postman VPMN.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
td-postman TCP Tobit David Postman VPMN Franz Josef Leuders -
td-postman UDP Tobit David Postman VPMN Franz Josef Leuders -

Check what is listening on port 1049

Linux: is anything listening on TCP 1049?
sudo ss -tlnp 'sport = :1049'
Linux: UDP 1049
sudo ss -ulnp 'sport = :1049'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1049
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1049 '
Windows (Command Prompt)
netstat -ano | findstr :1049
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1049 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1049
From Windows
Test-NetConnection HOST -Port 1049
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1049

Block port 1049 in the firewall

ufw
sudo ufw deny 1049/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1049 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1049 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1049' -Direction Inbound -Protocol TCP -LocalPort 1049 -Action Block
ufw
sudo ufw deny 1049/udp
iptables
sudo iptables -A INPUT -p udp --dport 1049 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1049 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1049' -Direction Inbound -Protocol UDP -LocalPort 1049 -Action Block

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