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Configuring Additional File Transfer Functions
Configuring a Router to Use rsh and rcp
FC-250
Cisco IOS Configuration Fundamentals Configuration Guide, Release 12.1
Note When support of incoming rsh commands is disabled, you can still issue an rsh command
to be executed on other routers that support the remote shell protocol and on UNIX hosts
on the network.
The following example shows how to add two entries for remote users to the authentication database,
and enable a router to support rsh commands from remote users:
ip rcmd remote-host Router1 172.16.101.101 rmtnetad1
ip rcmd remote-host Router1 172.16.101.101 netadmin4 enable
ip rcmd rsh-enable
The users, named rmtnetad1 and netadmin4, are both on the remote host at IP address 172.16.101.101.
Although both users are on the same remote host, you must include a unique entry for each user. Both
users are allowed to connect to the router and remotely execute rsh commands on it after the router is
enabled for rsh. The user named netadmin4 is allowed to execute privileged EXEC mode commands on
the router. Both authentication database entries give the router’s host name Router1 as the local
username. The last command enables the router for to support rsh commands issued by remote users.
Executing Commands Remotely Using rsh
You can use rsh to execute commands remotely on network servers that support the remote shell
protocol. To use this command, the .rhosts files (or equivalent files) on the network server must include
an entry that permits you to remotely execute commands on that host.
If the remote server has a directory structure, as do UNIX systems, the rsh command that you issue is
remotely executed from the directory of the account for the remote user that you specify through the
/user username keyword and argument pair.
If you do not specify the /user keyword and argument, the Cisco IOS software sends a default remote
username. As the default value of the remote username, the software sends the remote username
associated with the current TTY process, if that name is valid. If the TTY remote username is invalid,
the software uses the router host name as the both the remote and local usernames.
To execute a command remotely on a network server using rsh, use the following commands in user
EXEC mode:
Command Purpose
Step 1
enable [password]
Enters privileged EXEC mode.
Step 2
rsh {ip-address | host} [/user username]
remote-command
Executes a command remotely using rsh.