HTTPfy

Port 5192 (aol-2)

IANA assigns port 5192 to aol-2: AmericaOnline2.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
aol-2 TCP AmericaOnline2 Bruce Mackey -
aol-2 UDP AmericaOnline2 Bruce Mackey -

Check what is listening on port 5192

Linux: is anything listening on TCP 5192?
sudo ss -tlnp 'sport = :5192'
Linux: UDP 5192
sudo ss -ulnp 'sport = :5192'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5192
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5192 '
Windows (Command Prompt)
netstat -ano | findstr :5192
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5192 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5192
From Windows
Test-NetConnection HOST -Port 5192
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5192

Block port 5192 in the firewall

ufw
sudo ufw deny 5192/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5192 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5192 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5192' -Direction Inbound -Protocol TCP -LocalPort 5192 -Action Block
ufw
sudo ufw deny 5192/udp
iptables
sudo iptables -A INPUT -p udp --dport 5192 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5192 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5192' -Direction Inbound -Protocol UDP -LocalPort 5192 -Action Block

Related ports

5190aol5191aol-15193aol-35194cpscomm

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