Removal of Telnet and FTP (keep the SSH/SCP)

I don't want the sensors to run Telnet and FTP, services because I want to force anyone to connect to them to use SSH/SCP.

I edited the /etc/initd.conf and put in comment lines that start these services. However, this may not be the 'best method' because after that I tried that all of a sudden the sensor stopped listening on port 22 and I couldn't connect with SSH (of course). When I Uncomment the lines telnet and ftp in the inetd.conf, SSH/SCP/port 22 is open again. Weird. What should I do to remove these services?

BTW: on an unrelated note, the/dev/iprb0 (command and control) interface is the card that is assigned an IP address and is used for the connection of the sensor. / Dev/spwr0 is the interface which doesn't listen for traffic in promiscious mode and does not have an IP address assigned, right?

Thank you

Erik

Run sysconfig-sensor, there should be an option in the secure communications box to disable telnet and ftp. Sysconfig-sensor will then take care to make the changes for you.

4220 and 4230 sensor devices, your statements are correct for the interfaces.

NOTE: 4210, 4235 and 4250 sensors have names of different interfaces.

Marco

Tags: Cisco Security

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