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May 23rd, 2006 at 2:02 pm
Writing a Java firewall could be difficult because of the complexity involved with JNI. Obviously you cant write a firewall without getting into the OS’s TCP stack. It also depends on which OS you are trying to implement. You might get a lot of help with Linux but with Windows you are pretty much on your own. But that said, there are couple of implementations I saw on codeproject using managed code. Because it is easy to get at OS level APIs with C# (PInvoke and C++/CLI) I would think implementing it in C# (for Windoes) would be relatively easy than Java.
May 23rd, 2006 at 6:10 pm
hi there,
+1.
just a moment ago, I saw someone expressing a desire for Java VOIP server. Now, you’re expressing a desire for a Firewall.
Are we there yet ? What is going to be the overhead for a pure java implementation ? Will ordinary desktop users like it ?
I can offer to test it on my box.
BR,
~A
May 24th, 2006 at 5:38 am
> Are we there yet ?
In my preliminary investigation and prototype we have all the technologies to develop a Firewall in Java for Windows. We will however need some native calls which can be easily taken care of.
> What is going to be the overhead for a pure java implementation ?
I don’t think performance will be an issue. In any case we always have the option to use native modules. I seriously doubt we will need it.
> Will ordinary desktop users like it ?
That my friend only time will tell. It will be more functional than any of the popular Firewall in market today.
> I would think implementing it in C# (for Windoes) would be relatively easy than Java.
There are libraries to simplify JNI.
November 15th, 2006 at 2:40 pm
from my experience using java application it is slow and memory hungry. I have to upgrade more my RAM to ensure it’s running well.
August 8th, 2007 at 4:25 am
Khairul,
“Java is slow” is an age old myth, not reality; get over it.
December 27th, 2007 at 2:18 pm
I think there is a definite need for a firewall that can be easily managed by a consumer. Perhaps there is one out there and I have yet to find it. I like the idea of Java, simply because it is a language I am familiar with.
Have you considered a Linksys/Linux/Java solution. Linksys as I understand it produced a version of their wireless router that can run linux. If you used linux for the OS communication and used Java to provide a web-based UI and to interact with linux and put the whole thing in a linksys like hardware– you might have something valuable.
My opinion of security at the desktop level is low. It chews up system resources and gives consumers a false sense of control. Stateful packet inspection at a hardware based firewall with the ability to establish “trust zones” or “white lists” would be invaluable.
D