HTTPfy

Port 461 (datasurfsrv)

IANA assigns port 461 to datasurfsrv: DataRampSrv.

Well-known (system) port, 0-1023 TCPUDP

IANA assignment

Service nameProtoDescriptionAssigneeReference
datasurfsrv TCP DataRampSrv - -
datasurfsrv UDP DataRampSrv - -

Check what is listening on port 461

Linux: is anything listening on TCP 461?
sudo ss -tlnp 'sport = :461'
Linux: UDP 461
sudo ss -ulnp 'sport = :461'
Linux / macOS: which process owns the port
sudo lsof -nP -i :461
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':461 '
Windows (Command Prompt)
netstat -ano | findstr :461
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 461 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 461
From Windows
Test-NetConnection HOST -Port 461
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 461

Block port 461 in the firewall

ufw
sudo ufw deny 461/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 461 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 461 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 461' -Direction Inbound -Protocol TCP -LocalPort 461 -Action Block
ufw
sudo ufw deny 461/udp
iptables
sudo iptables -A INPUT -p udp --dport 461 -j DROP
nftables
sudo nft add rule inet filter input udp dport 461 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 461' -Direction Inbound -Protocol UDP -LocalPort 461 -Action Block

Related ports

459ampr-rcmd460skronk462datasurfsrvsec463alpes

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