As you may have noticed many security-related software/appliances are based on Linux or Unix operating
systems in their variety. And as the logical consequence of that remote managing of such devices is done with OpenSSH
package . What is lacking in these applications built on Linux/Unix platforms is alerting in real–time on successful
SSH login to the system [...]
Sep
18
2009
18
2009
SSH login alert by mail Linux or Unix based systems
Sep
13
2009
13
2009
Reinstall Checkpoint UTM firewall, the hard way…
Sometimes machines fail , in the end all machines fail some day anyway. When it happens to the firewall (Checkpoint ) it might be a very
frustrating event . By failing I mean machine turns on but doesn’t boot or boots into unusable state. The first thought that comes to
the sysadmin looking at such a miserable [...]
Sep
8
2009
8
2009
eSafe has iptables too ….
Did you know that eSafe software is based on RedHat Enterprise Linux (RHEL) ? Of course you did.
But what does it mean? It means that all (or almost all) tools/utilities/programming logic of the Linux is at your fingertips.
Let’s take for example software eSafe runs on the boot
[root@esafe root]# chkconfig –list
rdisc 0:off 1:off 2:off 3:off [...]
Sep
1
2009
1
2009
Ping – setting don't fragment bit in Linux/FreeBSD/Solaris/Cisco/Juniper
Ping.
Many times while debugging network problems of various kinds you need to send some packets
of desirable size and don’t fragment bit being set. Below I list how to do it for the different
equipment/OSes.
Let’s start with the most popular operating system among network folks – Linux:
Linux
By default ping in any Linux-based system (It also means any [...]