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Port 4885 (abbs)

IANA assigns port 4885 to abbs: ABBS.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
abbs TCP ABBS Ryan Rubley -
abbs UDP ABBS Ryan Rubley -

Check what is listening on port 4885

Linux: is anything listening on TCP 4885?
sudo ss -tlnp 'sport = :4885'
Linux: UDP 4885
sudo ss -ulnp 'sport = :4885'
Linux / macOS: which process owns the port
sudo lsof -nP -i :4885
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':4885 '
Windows (Command Prompt)
netstat -ano | findstr :4885
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 4885 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 4885
From Windows
Test-NetConnection HOST -Port 4885
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 4885

Block port 4885 in the firewall

ufw
sudo ufw deny 4885/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 4885 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 4885 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 4885' -Direction Inbound -Protocol TCP -LocalPort 4885 -Action Block
ufw
sudo ufw deny 4885/udp
iptables
sudo iptables -A INPUT -p udp --dport 4885 -j DROP
nftables
sudo nft add rule inet filter input udp dport 4885 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 4885' -Direction Inbound -Protocol UDP -LocalPort 4885 -Action Block

Related ports

4883wmlserver4884hivestor4888xcap-portal4889xcap-control

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