HTTPfy

Port 3185 (smpppd)

IANA assigns port 3185 to smpppd: SuSE Meta PPPD.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
smpppd TCP SuSE Meta PPPD Arvin Schnell -
smpppd UDP SuSE Meta PPPD Arvin Schnell -

Check what is listening on port 3185

Linux: is anything listening on TCP 3185?
sudo ss -tlnp 'sport = :3185'
Linux: UDP 3185
sudo ss -ulnp 'sport = :3185'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3185
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3185 '
Windows (Command Prompt)
netstat -ano | findstr :3185
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3185 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3185
From Windows
Test-NetConnection HOST -Port 3185
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3185

Block port 3185 in the firewall

ufw
sudo ufw deny 3185/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3185 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3185 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3185' -Direction Inbound -Protocol TCP -LocalPort 3185 -Action Block
ufw
sudo ufw deny 3185/udp
iptables
sudo iptables -A INPUT -p udp --dport 3185 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3185 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3185' -Direction Inbound -Protocol UDP -LocalPort 3185 -Action Block

Related ports

3183cops-tls3184apogeex-port3186iiw-port3187odi-port

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