HTTPfy

Port 2259 (bid-serv)

IANA assigns port 2259 to bid-serv: BIF identifiers resolution service.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
bid-serv TCP BIF identifiers resolution service Li Zhiping -
bid-serv UDP BIF identifiers resolution service Li Zhiping -

Registry dates for this port: registered 2023-03-06.

Check what is listening on port 2259

Linux: is anything listening on TCP 2259?
sudo ss -tlnp 'sport = :2259'
Linux: UDP 2259
sudo ss -ulnp 'sport = :2259'
Linux / macOS: which process owns the port
sudo lsof -nP -i :2259
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':2259 '
Windows (Command Prompt)
netstat -ano | findstr :2259
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 2259 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 2259
From Windows
Test-NetConnection HOST -Port 2259
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 2259

Block port 2259 in the firewall

ufw
sudo ufw deny 2259/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 2259 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 2259 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 2259' -Direction Inbound -Protocol TCP -LocalPort 2259 -Action Block
ufw
sudo ufw deny 2259/udp
iptables
sudo iptables -A INPUT -p udp --dport 2259 -j DROP
nftables
sudo nft add rule inet filter input udp dport 2259 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 2259' -Direction Inbound -Protocol UDP -LocalPort 2259 -Action Block

Related ports

2257simple-tx-rx2258rcts2260apc-22602261comotionmaster

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