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I've finally managed to get it working without using a wrapper for java. It has to do with filesystem capabilities in Linux. To let java list and select network interfaces, as well as analyse and ...
Answer
#1: Initial revision
by
aura-lsprog-86
·
2025-02-14T02:00:23Z (8 days ago)
I've finally managed to get it working without using a wrapper for `java`. It has to do with filesystem capabilities in Linux.
To let `java` list and select network interfaces, as well as analyse and capture packets, go to the directory where the executable the IDE uses is (for example, `/usr/lib/jvm/java-8-oracle/bin`; in Eclipse you can get it by seeing the console titlebar) and run the following command before doing so with your project:
sudo setcap cap_net_raw,cap_net_admin=eip java
Then run your project. Once you have tested your project, run the following command to leave things as they were before:
sudo setcap -r java
You can see if capabilities have been applied/removed by running:
getcap java
See [this](http://www.tcpdump.org/manpages/pcap.3pcap.html) for more information regarding Linux behaviour when opening interfaces, and [here](http://peternixon.net/news/2012/01/28/configure-tcpdump-work-non-root-user-opensuse-using-file-system-capabilities/) is a complete procedure in case you have to configure something.