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Port 1948 (eye2eye)

IANA assigns port 1948 to eye2eye.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
eye2eye TCP eye2eye Trevor Bell -
eye2eye UDP eye2eye Trevor Bell -

Check what is listening on port 1948

Linux: is anything listening on TCP 1948?
sudo ss -tlnp 'sport = :1948'
Linux: UDP 1948
sudo ss -ulnp 'sport = :1948'
Linux / macOS: which process owns the port
sudo lsof -nP -i :1948
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':1948 '
Windows (Command Prompt)
netstat -ano | findstr :1948
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 1948 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 1948
From Windows
Test-NetConnection HOST -Port 1948
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 1948

Block port 1948 in the firewall

ufw
sudo ufw deny 1948/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 1948 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 1948 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 1948' -Direction Inbound -Protocol TCP -LocalPort 1948 -Action Block
ufw
sudo ufw deny 1948/udp
iptables
sudo iptables -A INPUT -p udp --dport 1948 -j DROP
nftables
sudo nft add rule inet filter input udp dport 1948 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 1948' -Direction Inbound -Protocol UDP -LocalPort 1948 -Action Block

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Assignment data: IANA port number registry (public domain), retrieved 2026-11-10.