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Port 5584 (bis-web)

IANA assigns port 5584 to bis-web: BeInSync-Web.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bis-web TCP BeInSync-Web Adi Ruppin -
bis-web UDP BeInSync-Web Adi Ruppin -

Registry dates for this port: registered 2005-08.

Check what is listening on port 5584

Linux: is anything listening on TCP 5584?
sudo ss -tlnp 'sport = :5584'
Linux: UDP 5584
sudo ss -ulnp 'sport = :5584'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5584
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5584 '
Windows (Command Prompt)
netstat -ano | findstr :5584
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5584 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5584
From Windows
Test-NetConnection HOST -Port 5584
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5584

Block port 5584 in the firewall

ufw
sudo ufw deny 5584/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5584 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5584 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5584' -Direction Inbound -Protocol TCP -LocalPort 5584 -Action Block
ufw
sudo ufw deny 5584/udp
iptables
sudo iptables -A INPUT -p udp --dport 5584 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5584 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5584' -Direction Inbound -Protocol UDP -LocalPort 5584 -Action Block

Related ports

5582fac-restore5583tmo-icon-sync5585bis-sync5586att-mt-sms

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