HTTPfy

Port 5059 (sds)

IANA assigns port 5059 to sds: SIP Directory Services.

Registered (user) port, 1024-49151 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
sds TCP SIP Directory Services Arthur Wilton -
sds UDP SIP Directory Services Arthur Wilton -

Registry dates for this port: registered 2006-03.

Check what is listening on port 5059

Linux: is anything listening on TCP 5059?
sudo ss -tlnp 'sport = :5059'
Linux: UDP 5059
sudo ss -ulnp 'sport = :5059'
Linux / macOS: which process owns the port
sudo lsof -nP -i :5059
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':5059 '
Windows (Command Prompt)
netstat -ano | findstr :5059
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 5059 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 5059
From Windows
Test-NetConnection HOST -Port 5059
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 5059

Block port 5059 in the firewall

ufw
sudo ufw deny 5059/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 5059 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 5059 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 5059' -Direction Inbound -Protocol TCP -LocalPort 5059 -Action Block
ufw
sudo ufw deny 5059/udp
iptables
sudo iptables -A INPUT -p udp --dport 5059 -j DROP
nftables
sudo nft add rule inet filter input udp dport 5059 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 5059' -Direction Inbound -Protocol UDP -LocalPort 5059 -Action Block

Related ports

5057intecom-ps25058locus-disc5060SIP5061SIP over TLS

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