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Port 370 (codaauth2)

IANA assigns port 370 to codaauth2.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
codaauth2 TCP codaauth2 Robert Watson -
codaauth2 UDP codaauth2 Robert Watson -

Check what is listening on port 370

Linux: is anything listening on TCP 370?
sudo ss -tlnp 'sport = :370'
Linux: UDP 370
sudo ss -ulnp 'sport = :370'
Linux / macOS: which process owns the port
sudo lsof -nP -i :370
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':370 '
Windows (Command Prompt)
netstat -ano | findstr :370
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 370 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 370
From Windows
Test-NetConnection HOST -Port 370
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 370

Block port 370 in the firewall

ufw
sudo ufw deny 370/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 370 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 370 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 370' -Direction Inbound -Protocol TCP -LocalPort 370 -Action Block
ufw
sudo ufw deny 370/udp
iptables
sudo iptables -A INPUT -p udp --dport 370 -j DROP
nftables
sudo nft add rule inet filter input udp dport 370 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 370' -Direction Inbound -Protocol UDP -LocalPort 370 -Action Block

Related ports

368qbikgdp369rpc2portmap371clearcase372ulistproc

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