HTTPfy

Port 350 (matip-type-a)

IANA assigns port 350 to matip-type-a: MATIP Type A.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
matip-type-a TCP MATIP Type A Alain Robert RFC 2351
matip-type-a UDP MATIP Type A Alain Robert RFC 2351

Check what is listening on port 350

Linux: is anything listening on TCP 350?
sudo ss -tlnp 'sport = :350'
Linux: UDP 350
sudo ss -ulnp 'sport = :350'
Linux / macOS: which process owns the port
sudo lsof -nP -i :350
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':350 '
Windows (Command Prompt)
netstat -ano | findstr :350
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 350 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 350
From Windows
Test-NetConnection HOST -Port 350
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 350

Block port 350 in the firewall

ufw
sudo ufw deny 350/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 350 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 350 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 350' -Direction Inbound -Protocol TCP -LocalPort 350 -Action Block
ufw
sudo ufw deny 350/udp
iptables
sudo iptables -A INPUT -p udp --dport 350 -j DROP
nftables
sudo nft add rule inet filter input udp dport 350 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 350' -Direction Inbound -Protocol UDP -LocalPort 350 -Action Block

Related ports

348csi-sgwp349mftp351matip-type-b, bhoetty352dtag-ste-sb, bhoedap4

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