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Port 10161 (snmptls, snmpdtls)

IANA assigns port 10161 to snmptls, snmpdtls: SNMP-TLS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
snmptls TCP SNMP-TLS - RFC 6353
snmpdtls UDP SNMP-DTLS - RFC 6353

Check what is listening on port 10161

Linux: is anything listening on TCP 10161?
sudo ss -tlnp 'sport = :10161'
Linux: UDP 10161
sudo ss -ulnp 'sport = :10161'
Linux / macOS: which process owns the port
sudo lsof -nP -i :10161
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':10161 '
Windows (Command Prompt)
netstat -ano | findstr :10161
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 10161 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 10161
From Windows
Test-NetConnection HOST -Port 10161
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 10161

Block port 10161 in the firewall

ufw
sudo ufw deny 10161/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 10161 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 10161 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 10161' -Direction Inbound -Protocol TCP -LocalPort 10161 -Action Block
ufw
sudo ufw deny 10161/udp
iptables
sudo iptables -A INPUT -p udp --dport 10161 -j DROP
nftables
sudo nft add rule inet filter input udp dport 10161 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 10161' -Direction Inbound -Protocol UDP -LocalPort 10161 -Action Block

Related ports

10129bmc-gms10160qb-db-server10162snmptls-trap, snmpdtls-trap10200trisoap

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