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// Network services

Port 5063: centrify secure RPC

Port 5063 is assigned by IANA to csrpc (centrify secure RPC).

5063

How csrpc works

Network services
client:5063csrpcresponse client:5063csrpcresponse

The client sends a request to port 5063 and the csrpc service answers.

Transport
TCP
Exposure risk
not rated depends on the program listening
Encryption
Unknownnot stated by the registry
IANA status
Assigned1 registered service
Range
Registered (1024-49151)
Category
Network services
01 Security

Is port 5063 dangerous?

We have no specific security note for port 5063. Its risk depends on the program actually listening on it. General advice for network services services:

  • Answer only the networks that need the service (no open resolvers, relays or reflectors).
  • UDP services can be abused for DDoS amplification: rate-limit or block them at the edge.
  • Disable legacy test services that have no use in production.
02 Registry

IANA registry entries for port 5063

ServicePortTransportDescriptionReferenceUpdated
csrpc 5063 TCP centrify secure RPC - 2009-10-28
-5063-Reserved--

// source: IANA service name and port number registry

03 Check it

Which program uses port 5063, and is it reachable?

Linux

sudo ss -ltnup 'sport = :5063'      # process listening on 5063
sudo lsof -nP -i :5063

macOS

sudo lsof -nP -i :5063

Windows (PowerShell)

Get-NetTCPConnection -LocalPort 5063 -State Listen | Select LocalAddress, OwningProcess
Get-NetUDPEndpoint -LocalPort 5063
netstat -ano | findstr :5063

From another machine

nmap -p 5063 -sV <host>
nc -zv <host> 5063

Block it in the firewall

sudo ufw deny 5063/tcp                                         # Linux (ufw)
New-NetFirewallRule -DisplayName "Block 5063" -Direction Inbound -LocalPort 5063 -Protocol TCP -Action Block  # Windows
04 FAQ
What is port 5063 used for?

Port 5063 is assigned by IANA to csrpc (centrify secure RPC).

Is port 5063 TCP or UDP?

Port 5063 is registered for TCP.

Is it safe to open port 5063?

It depends on the program that listens on it. Open it only for a service you know and only to the networks that need it. Answer only the networks that need the service (no open resolvers, relays or reflectors).

How do I check if port 5063 is open?

On Linux run "ss -ltnup 'sport = :5063'", on macOS "lsof -nP -i :5063", and on Windows "netstat -ano | findstr :5063" to see the local process. From another machine, "nmap -p 5063 <host>" shows whether it is reachable.

05 Related
:53 DNS tcp · udp · moderate risk :135 MS RPC tcp · udp · high risk :123 NTP udp · tcp · moderate risk :67 DHCP server udp · tcp · moderate risk :111 rpcbind tcp · udp · high risk :9100 Raw printing (JetDirect) tcp · udp · high risk :631 IPP / CUPS tcp · udp · high risk :5353 mDNS udp · tcp · moderate risk

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