HTTPfy

Port 1885 (vrtstrapserver)

IANA assigns port 1885 to vrtstrapserver: Veritas Trap Server.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
vrtstrapserver TCP Veritas Trap Server Russell Thrasher -
vrtstrapserver UDP Veritas Trap Server Russell Thrasher -

Check what is listening on port 1885

Linux: is anything listening on TCP 1885?
sudo ss -tlnp 'sport = :1885'
Linux: UDP 1885
sudo ss -ulnp 'sport = :1885'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1885
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1885 '
Windows (Command Prompt)
netstat -ano | findstr :1885
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1885 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1885
From Windows
Test-NetConnection HOST -Port 1885
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1885

Block port 1885 in the firewall

ufw
sudo ufw deny 1885/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1885 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1885 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1885' -Direction Inbound -Protocol TCP -LocalPort 1885 -Action Block
ufw
sudo ufw deny 1885/udp
iptables
sudo iptables -A INPUT -p udp --dport 1885 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1885 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1885' -Direction Inbound -Protocol UDP -LocalPort 1885 -Action Block

Related ports

1883MQTT1884idmaps1886leoip1887filex-lport

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