Increasing ssh Open Files Limit for C-shell (csh) Sessions

Note: This will increase the limit of the number of concurrent open files for RedHat System 8 and above, plus Redhat Enterprise ES version 3 and various flavors of Linux.

Sign on as root and perform the following:

# vi /etc/security/limits.conf

Add:

    *   soft   nofile   32768*   hard   nofile   32768

NOTE: Skip this step if you are running CentOS or Fedora.

# vi /etc/pam.d/login

Add the line:

    session required /lib/security/pam_limits.so

NOTE: Skip this step if you are running CentOS or Fedora.

# vi /etc/pam.d/sshd

Add the line:

    session required /lib/security/pam_limits.so

# vi /etc/ssh/sshd_config

Enable:

    UsePrivilegeSeparation no

```
# service sshd restart
```