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Port 462 (datasurfsrvsec)

IANA assigns port 462 to datasurfsrvsec: DataRampSrvSec.

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

IANA assignment

Service nameProtoDescriptionAssigneeReference
datasurfsrvsec TCP DataRampSrvSec Diane Downie -
datasurfsrvsec UDP DataRampSrvSec Diane Downie -

Check what is listening on port 462

Linux: is anything listening on TCP 462?
sudo ss -tlnp 'sport = :462'
Linux: UDP 462
sudo ss -ulnp 'sport = :462'
Linux / macOS: which process owns the port
sudo lsof -nP -i :462
Older Linux / BSD (net-tools)
sudo netstat -tlnp | grep ':462 '
Windows (Command Prompt)
netstat -ano | findstr :462
Windows (PowerShell)
Get-NetTCPConnection -LocalPort 462 -State Listen | Select LocalAddress,OwningProcess

Test it from outside

From another machine
nc -vz -w 5 HOST 462
From Windows
Test-NetConnection HOST -Port 462
UDP probe (no reply does not prove it is closed)
nc -vzu -w 5 HOST 462

Block port 462 in the firewall

ufw
sudo ufw deny 462/tcp
iptables
sudo iptables -A INPUT -p tcp --dport 462 -j DROP
nftables
sudo nft add rule inet filter input tcp dport 462 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block TCP 462' -Direction Inbound -Protocol TCP -LocalPort 462 -Action Block
ufw
sudo ufw deny 462/udp
iptables
sudo iptables -A INPUT -p udp --dport 462 -j DROP
nftables
sudo nft add rule inet filter input udp dport 462 drop
Windows Firewall
New-NetFirewallRule -DisplayName 'Block UDP 462' -Direction Inbound -Protocol UDP -LocalPort 462 -Action Block

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460skronk461datasurfsrv463alpes464Kerberos password change

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