HTTPfy

Port 2658 (sns-admin)

IANA assigns port 2658 to sns-admin: SNS Admin.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sns-admin TCP SNS Admin - -
sns-admin UDP SNS Admin - -

Check what is listening on port 2658

Linux: is anything listening on TCP 2658?
sudo ss -tlnp 'sport = :2658'
Linux: UDP 2658
sudo ss -ulnp 'sport = :2658'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2658
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2658 '
Windows (Command Prompt)
netstat -ano | findstr :2658
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2658 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2658
From Windows
Test-NetConnection HOST -Port 2658
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2658

Block port 2658 in the firewall

ufw
sudo ufw deny 2658/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2658 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2658 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2658' -Direction Inbound -Protocol TCP -LocalPort 2658 -Action Block
ufw
sudo ufw deny 2658/udp
iptables
sudo iptables -A INPUT -p udp --dport 2658 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2658 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2658' -Direction Inbound -Protocol UDP -LocalPort 2658 -Action Block

Related ports

2656kana2657sns-dispatcher2659sns-query2660gcmonitor

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