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Port 3808 (sun-as-iiops-ca)

IANA assigns port 3808 to sun-as-iiops-ca: Sun App Svr-IIOPClntAuth.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sun-as-iiops-ca TCP Sun App Svr-IIOPClntAuth Abhijit Kumar -
sun-as-iiops-ca UDP Sun App Svr-IIOPClntAuth Abhijit Kumar -

Registry dates for this port: registered 2005-11.

Check what is listening on port 3808

Linux: is anything listening on TCP 3808?
sudo ss -tlnp 'sport = :3808'
Linux: UDP 3808
sudo ss -ulnp 'sport = :3808'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3808
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3808 '
Windows (Command Prompt)
netstat -ano | findstr :3808
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3808 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3808
From Windows
Test-NetConnection HOST -Port 3808
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3808

Block port 3808 in the firewall

ufw
sudo ufw deny 3808/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3808 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3808 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3808' -Direction Inbound -Protocol TCP -LocalPort 3808 -Action Block
ufw
sudo ufw deny 3808/udp
iptables
sudo iptables -A INPUT -p udp --dport 3808 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3808 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3808' -Direction Inbound -Protocol UDP -LocalPort 3808 -Action Block

Related ports

3806wsmlb3807spugna3809apocd3810wlanauth

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