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Port 5099 (sentlm-srv2srv)

IANA assigns port 5099 to sentlm-srv2srv: SentLM Srv2Srv.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sentlm-srv2srv TCP SentLM Srv2Srv Derick Snyder -
sentlm-srv2srv UDP SentLM Srv2Srv Derick Snyder -

Check what is listening on port 5099

Linux: is anything listening on TCP 5099?
sudo ss -tlnp 'sport = :5099'
Linux: UDP 5099
sudo ss -ulnp 'sport = :5099'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5099
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5099 '
Windows (Command Prompt)
netstat -ano | findstr :5099
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5099 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5099
From Windows
Test-NetConnection HOST -Port 5099
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5099

Block port 5099 in the firewall

ufw
sudo ufw deny 5099/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5099 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5099 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5099' -Direction Inbound -Protocol TCP -LocalPort 5099 -Action Block
ufw
sudo ufw deny 5099/udp
iptables
sudo iptables -A INPUT -p udp --dport 5099 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5099 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5099' -Direction Inbound -Protocol UDP -LocalPort 5099 -Action Block

Related ports

5093sentinel-lm5094hart-ip5100socalia5101talarian-tcp, talarian-udp

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