How do you hack a barracuda filter?
Are you talking about "hacking", as in extending the functionality of a device or using it for a purpose not intended by the manufacturer, or "cracking" as in breaking through security on a particular device/network?
If you are talking about hacking it, I'm not sure there's anything I can do to help you unless you provide more information on what it is that you want it do.
Cracking, on the other hand, is a different story. These filters are designed with security in mind and thus are not particularly easy to exploit. If your filter is running embedded linux with an old version of the linux kernel, there are sometimes exploits that will work on these. However, gaining shell access to the filter is probably not what you want, as nowadays most settings can only be changed from the web interface. Depending on the design on the web interface, it may be possible to grab the password while it's in transit-though this would require an administrator to log in from somewhere else on the network. Well-designed systems are nearly fully automated, and probably regularly submit the logfiles elsewhere for viewing.
If you just want to be able to access a web service that's blocked by the filter, this is much easier to accomplish. The filter functions by dropping packets addressed to locations prohibited by the firewall policies. However, it is possible to "tunnel" these packets through another, unblocked server before they are sent to their intended destination. There are a few ways to do this, which vary in difficulty and complexity. The easiest way to do this would be to sign up for a VPN service, like Spotflux, CyberGhost, or, ironically, the VPN service that Barracuda provides. Keep in mind that these generally cost money (Spotflux has a free plan last I checked, but it's kinda cruddy). The next easiest is to set up an SSH server on a unix-based machine that you own, or ask a friend to make you an account on his/hers. Done correctly, it's possible to tunnel packets through an open SSH session (as an added bonus, it's also encrypted). This process differs depending on the operating system that you use, so I won't go into detail here. Google searches for "set up ssh server [insert OS here]" and "tunneling over ssh [insert OS here]" should suffice. Keep in mind that SSH uses TCP port 22, which is sometimes blocked by filters. This prevents your tunnel from functioning, so I would recommend reconfiguring your server and client to use 80 or 443, which are almost always unblocked. The third option is to set up your own VPN server. I've never used anything except for OpenVPN, so that's the only one I can really recommend here. It's relatively easy to set up, and there are plenty of guides on their website, as well as various blogs across the internet.
I'm sorry that ended up as long as it did, but I hope I helped!
If you feel lost, feel free to comment, but don't underestimate the power of Google-it puts the web of human knowledge known as the internet at your disposal!
May 05, 2014 |
Computers & Internet