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Port 5135 (erp-scale)

IANA assigns port 5135 to erp-scale: ERP-Scale.

Registered (user) port, 1024-49151 TCP

IANA assignment

Service nameProtoDescriptionAssigneeReference
erp-scale TCP ERP-Scale
Defined TXT keys: RFC=<RFC destination and status> Device=<Scale device and status> Ian Bradley -

Registry dates for this port: registered 2009-10-14.

Check what is listening on port 5135

Linux: is anything listening on TCP 5135?
sudo ss -tlnp 'sport = :5135'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5135
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5135 '
Windows (Command Prompt)
netstat -ano | findstr :5135
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5135 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5135
From Windows
Test-NetConnection HOST -Port 5135

Block port 5135 in the firewall

ufw
sudo ufw deny 5135/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5135 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5135 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5135' -Direction Inbound -Protocol TCP -LocalPort 5135 -Action Block

Related ports

5133nbt-pc5134ppactivation5136minotaur-sa5137ctsd

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