HTTPfy

Port 3408 (BESApi)

IANA assigns port 3408 to BESApi: BES Api Port.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
BESApi TCP BES Api Port Colin Griffiths -
BESApi UDP BES Api Port Colin Griffiths -

Registry dates for this port: registered 2002-02.

Check what is listening on port 3408

Linux: is anything listening on TCP 3408?
sudo ss -tlnp 'sport = :3408'
Linux: UDP 3408
sudo ss -ulnp 'sport = :3408'
Linux / macOS: which process owns the port
sudo lsof -nP -i :3408
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':3408 '
Windows (Command Prompt)
netstat -ano | findstr :3408
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 3408 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 3408
From Windows
Test-NetConnection HOST -Port 3408
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 3408

Block port 3408 in the firewall

ufw
sudo ufw deny 3408/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 3408 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 3408 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 3408' -Direction Inbound -Protocol TCP -LocalPort 3408 -Action Block
ufw
sudo ufw deny 3408/udp
iptables
sudo iptables -A INPUT -p udp --dport 3408 -j DROP
nftables
sudo nft add rule inet filter input udp dport 3408 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 3408' -Direction Inbound -Protocol UDP -LocalPort 3408 -Action Block

Related ports

3406nokia-ann-ch23407ldap-admin3409networklens3410networklenss

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