On Tue, Nov 30, 2021 at 10:30:17AM +0800, Vladimir Nikishkin wrote: > Dear Netfilter users, > > I have been recently trying to find out how to efficiently log > suspicious packets passing through my firewall. While perusing ulogd2 > examples, as well as netfilter mailing list, I found about the existence > of the GPRINT output plugin. > > However, the basic stack suggested in ulogd.conf: > ``` > stack=log4:NFLOG,gp1:GPRINT > ``` > did not really work for me, ulogd was complaining about > ``` > ulogd.c:854 type mismatch between GPRINT and NFLOG in stack This is a bug: https://patchwork.ozlabs.org/project/netfilter-devel/patch/20220104112056.4034-1-pablo@xxxxxxxxxxxxx/ > ``` > And the log file was empty. > > I haven't found any other documentation for GPRINT. > What is it and what is it for? Yet another output plugin which displays every field brought to you bu the input plugin feeder.
