HTTPfy

Port 2438 (msp)

IANA assigns port 2438 to msp: MSP.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
msp TCP MSP Evan Caves -
msp UDP MSP Evan Caves -

Check what is listening on port 2438

Linux: is anything listening on TCP 2438?
sudo ss -tlnp 'sport = :2438'
Linux: UDP 2438
sudo ss -ulnp 'sport = :2438'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2438
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2438 '
Windows (Command Prompt)
netstat -ano | findstr :2438
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2438 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2438
From Windows
Test-NetConnection HOST -Port 2438
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2438

Block port 2438 in the firewall

ufw
sudo ufw deny 2438/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2438 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2438 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2438' -Direction Inbound -Protocol TCP -LocalPort 2438 -Action Block
ufw
sudo ufw deny 2438/udp
iptables
sudo iptables -A INPUT -p udp --dport 2438 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2438 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2438' -Direction Inbound -Protocol UDP -LocalPort 2438 -Action Block

Related ports

18msp2436topx2437unicontrol2439sybasedbsynch2440spearway

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