To communicate with other NetScaler appliances, each appliance requires knowledge of the other appliances, including how to authenticate on NetScaler appliance. RPC nodes are internal system entities used for system-to-system communication of configuration and session information. One RPC node exists on each NetScaler appliance and stores information, such as the IP addresses of the other NetScaler appliance and the passwords used for authentication. The NetScaler appliance that contacts the other NetScaler appliance checks the password within the RPC node.
Note:
After you upgrade a NetScaler appliance to release 13.1 build 33.x or later from one of the following builds, the secure option for the RPC node is enabled or disabled on the basis of the TLS 1.2 setting (enabled or disabled) present for the internal RPCS and KRPCS services.
Release 13.0 build 64.35 or earlier
Release 12.1 build 61.18 or earlier
The RPC communication is encrypted between the NetScaler nodes of the following setups if the secure option is enabled:
High availability
Cluster
GSLB
The secure option uses secure protocol TLS1.2 and port numbers 3008 and 3009 for the RPC connection between the NetScaler nodes.
For ensuring secure RPC communication, Citrix recommends performing the following operations before upgrading these setups:
TLS 1.2 must be enabled for the internal RPCS and KRPCS services:
nsrpcs-127.0.0.1-3008
nskrpcs-127.0.0.1-3009
nsrpcs-::1l-3008
3008 and 3009 must be unblocked in firewalls between the NetScaler nodes.
You can enable or disable the secure option using the NetScaler CLI or the GUI.
To change an RPC node password by using the GUI
Navigate to System > Network > RPC.
In the RPC pane, select the node and then click Edit.
In Configure RPC Node, type the new password.
In Source IP Address, type the existing node’s IP address to be used to communicate with the peer system node.
Select Secure and then click OK.
Note
For enhanced security, Citrix recommends you to enable the Secure option on RPC nodes. When you enable the Secure option, the appliance encrypts all the RPC communication sent from one ADC node to other ADC nodes thus securing the RPC communication. This secure communication uses the port number 3008. If the firewall between the ADC nodes blocks the port number 3008, unblock it and proceed. Otherwise, configuration synchronization and configuration propagation might fail.
To change an RPC node password by using the CLI
At the command line, type the following commands:
set ns rpcNode <IPAddress> {-password} [-secure ( YES | NO )]show ns rpcNode<!--NeedCopy-->
Example:
> set ns rpcNode 192.0.2.4 -password mypassword -secure YES Done> show rpcNode... IPAddress: 192.0.2.4 Password: d336004164d4352ce39e SrcIP: * Secure: ONDone><!--NeedCopy-->
Open a web browser and access the status page via the IP address of the RPC. (ex. http://192.168.1.250) The default username is “admin” and the initial password is “pw”.
Open a web browser and access the status page via the IP address of the RPC. (ex. http://192.168.1.250) The default username is “admin” and the initial password is “pw”.
Restart the RPC service : Press the Windows key + R, type "services. msc" in the Run dialog box, and press Enter. In the Services window, find the "Remote Procedure Call (RPC)" service, right-click it and select "Restart". Repeat the same process for the "Remote Procedure Call (RPC) Locator" service.
A Remote Procedure Call (RPC) is a software communication protocol that one program uses to request a service from another program located on a different computer and network, without having to understand the network's details.
Remote Procedure Call (RPC) protocol is generally used to communicate between processes on different workstations. However, RPC works just as well for communication between different processes on the same workstation. RPC Features.
To change your password during a remote desktop session, you should use the key combination Ctrl+Alt+.End within the window of the remote desktop. This specific sequence is designed for functionality in remote sessions and will trigger the Windows Security Dialog on your remote machine, unlike using Ctrl+C. Alt+++.
In User Name, type nsroot . In Password, if the earlier default password does not work, try typing the serial number of the appliance. The serial number bar code is available at the back of the appliance. Citrix recommends that you change the password after the first logon.
Go to Computer Configuration > Policies > Windows Settings > Security Settings > Windows Firewall with Advanced Security > Windows Firewall with Advanced Security - LDAP > Inbound Rules. Right-click and choose New Rule.
A Remote Procedure Call or RPC node is a type of computer server that allows users to read data on the blockchain and send transactions to different networks.
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