Disconnect VPN or Mobile Access or SNX user from Check Point firewall

You may need occasionally to disconnect some or all connected users from the firewall forcibly. There are few ways I can think about to do so, for example installing Security Policy clears the cached authentication of the remote users, and while it does not disconnect them it will force a …



On what Linux version do Check Point firewalls run ?

Throughout its history CheckPoint firewall changed versions and names, incorporated other products. The last, so far, evolution has been the Gaia operating system released in 2012. All this holds true of course but nevertheless the base platform for the firewall all these years has been Red Hat Enterprise Linux server …



Configure SSL protocol version used in SSL VPN by Check Point

With a lot of attention recently to the SSL protocol vulnerabilities browser vendors increase security of their SSL implementation almost daily. One of the recommendations is to use the most up to date SSL version available. Check Point for its SSL based VPNs (by the way it is the same …



Add free disk space to Check Point appliance hard disk

With previous generation of Check Point UTM appliances (so called UTM-1 which included UTM 132, 270, 450 etc.) it was a really nagging issue when firewall run out of space on its hard disk. It was especially problematic for the root partition cause it is used for update downloads, upgrade …



Check Point Gaia route missing after adding via ip route add problem

Check Point Gaia route missing after adding via ip route add problem Well, it is actually a feature not a bug of all Check Point firewalls working on Gaia. If you haven't noticed as opposed to good old SPLAT firewall platform the Gaia is selective about which routes to propagate …



RHEL get firewall zones and their interfaces in one go

The firewall-cmd doesn't have an option to show all zones and to which one the server interfaces belong, so here is a one-line to show that: #for ii in ls /usr/lib/firewalld/zones/; do echo ${ii%%.xml}: ; firewall-cmd --zone=${ii%%.xml} --list-interfaces; done The output: block: dmz: drop: external …



fw ctl zdebug drop - Check Point firewall ultimate debug command

Check Point provided us many ways to debug issues. Some are easier, some are harder. The first thing to do when you have dropped traffic is to see whether the packets are being dropped by the firewall or not. The first impulse is to look at SmartView Tracker's logs and …



Do not miss Netflow capability of Check Point Gaia R77 and above

Do not miss Netflow capability of Check Point Gaia R77 and above. In the past measuring the traffic passing through firewall wasn't easy - you had to either query interface counters via SNMP or run custom Bash scripts on the firewall itself to get interface statistics. The problem with both of …



Change colors of ls output in the bash shell

Usually colorization is put in action via alias : alias ls='ls --color=auto' You can turn off the colors each time you run ls: ls --color=never or change the alias itself to disable fancy colors permanently or even simple \ls . But to change the colors you'd need to cause …



How to know Checkpoint UTM Appliance model from the cli

Many times you get to work on some UTM appliance remotely via ssh and need to know which exact model it is. It takes just one cli Expert level command to know: dmidecode | grep "Product Name". Then you go and compare the output with the UTM models table which Tobias …