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Port 3236 (apparenet-ts)

IANA assigns port 3236 to apparenet-ts: appareNet Test Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
apparenet-ts TCP appareNet Test Server - -
apparenet-ts UDP appareNet Test Server - -

Check what is listening on port 3236

Linux: is anything listening on TCP 3236?
sudo ss -tlnp 'sport = :3236'
Linux: UDP 3236
sudo ss -ulnp 'sport = :3236'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3236
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3236 '
Windows (Command Prompt)
netstat -ano | findstr :3236
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3236 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3236
From Windows
Test-NetConnection HOST -Port 3236
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3236

Block port 3236 in the firewall

ufw
sudo ufw deny 3236/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3236 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3236 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3236' -Direction Inbound -Protocol TCP -LocalPort 3236 -Action Block
ufw
sudo ufw deny 3236/udp
iptables
sudo iptables -A INPUT -p udp --dport 3236 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3236 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3236' -Direction Inbound -Protocol UDP -LocalPort 3236 -Action Block

Related ports

3234alchemy3235mdap-port3237apparenet-tps3238apparenet-as

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