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Port 25902 (nilinkanalyst)

IANA assigns port 25902 to nilinkanalyst: NILinkAnalyst.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
nilinkanalyst TCP NILinkAnalyst Roman Oliynyk 2 -
nilinkanalyst UDP NILinkAnalyst Roman Oliynyk 2 -

Registry dates for this port: registered 2007-08-30.

Check what is listening on port 25902

Linux: is anything listening on TCP 25902?
sudo ss -tlnp 'sport = :25902'
Linux: UDP 25902
sudo ss -ulnp 'sport = :25902'
Linux / macOS: which process owns the port
sudo lsof -nP -i :25902
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':25902 '
Windows (Command Prompt)
netstat -ano | findstr :25902
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 25902 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 25902
From Windows
Test-NetConnection HOST -Port 25902
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 25902

Block port 25902 in the firewall

ufw
sudo ufw deny 25902/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 25902 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 25902 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 25902' -Direction Inbound -Protocol TCP -LocalPort 25902 -Action Block
ufw
sudo ufw deny 25902/udp
iptables
sudo iptables -A INPUT -p udp --dport 25902 -j DROP
nftables
sudo nft add rule inet filter input udp dport 25902 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 25902' -Direction Inbound -Protocol UDP -LocalPort 25902 -Action Block

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