AIX notes … ipfilter, unzip, zlib, openssh, openssl

I had the privilege of experiencing AIX for the very first time this week. Hopefully this can save someone else time.

Some packages that aren’t installed by default that you might want include openssl, openssh, unzip, zlib, and IPFilter.

I would probably start with openssl/openssh. In AIX 7.2, you can do it in the OS installer. To do it outside of the installer, keep the installation cd in and run the following commands:

mount -V cdrfs -o ro /dev/cd0 /mnt
cd /mnt/usr/sys/inst.images/
installp -ac -Y -d . openssh.base openssl.base
lssrc -s sshd
umount /mnt

The default partitions aren’t big enough! Fortunately, it’s very easy to extend the partitions. You can do so with the following commands:

chfs -a size=+4G /opt
chfs -a size=+4G /var
chfs -a size=+4G /home
chfs -a size=+4G /usr
chfs -a size=+2G /tmp
chfs -a size=+4G /admin

Installing 3rd party software:

You can download unzip from: You can install it with “rpm -i” just like in Linux. Another open for unzipping files without unzip is using jar. You can run “jar -xvf” on a file and it can unzip it as well.

If you need the zlib library, you can get it from: The library was listed in the README, but I didn’t install it and the VEN seemed to work without it.

You can install IPFilter from It will require a login, but not a serial number. Just create a login and download. Installing IPFilter is a little different. It installs like an AIX package, with installp. Unzip the contents of the and go into the IPFilter_Fileset directory and run the following commands:

inutoc .
installp -ac -gXY -d. ipfl