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Port 3995 (iss-mgmt-ssl)

IANA assigns port 3995 to iss-mgmt-ssl: ISS Management Svcs SSL.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
iss-mgmt-ssl TCP ISS Management Svcs SSL Wes Wilson -
iss-mgmt-ssl UDP ISS Management Svcs SSL Wes Wilson -

Registry dates for this port: registered 2003-10.

Check what is listening on port 3995

Linux: is anything listening on TCP 3995?
sudo ss -tlnp 'sport = :3995'
Linux: UDP 3995
sudo ss -ulnp 'sport = :3995'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3995
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3995 '
Windows (Command Prompt)
netstat -ano | findstr :3995
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3995 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3995
From Windows
Test-NetConnection HOST -Port 3995
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3995

Block port 3995 in the firewall

ufw
sudo ufw deny 3995/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3995 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3995 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3995' -Direction Inbound -Protocol TCP -LocalPort 3995 -Action Block
ufw
sudo ufw deny 3995/udp
iptables
sudo iptables -A INPUT -p udp --dport 3995 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3995 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3995' -Direction Inbound -Protocol UDP -LocalPort 3995 -Action Block

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