Your ssh messages reads

filter ssh_messages { facility("AUTH") and level("INFO"); };

Are you sure all ssh related messages are logged at auth.info?

Note that unlike syslogd level(info) will only match "info" exactly and not info and up. To match a range, you can use level (info..emerg)

Also, why don't you just match on program name? E.g. program("sshd") or something?

And one last note, once you deliver a message using flags(final) you won't need to negate the filter in subsequent log paths. Syslog-ng would simply stop processing at flags (final).

On Wed, Apr 7, 2021, 08:06 Dan Egli <dan@newideatest.site> wrote:

No joy. I tried swapping it different ways.

filter -> source -> destination = combined
source -> filter -> destination = combined

Here's what my config looks like now, after the second variant:

@version: 3.30

@include "scl.conf"

options {
     threaded(yes);
     chain_hostnames(no);
     stats_freq(43200);
     mark_freq(3600);
};

source src { system(); internal(); };

filter samba { program("samba"); };
filter ssh_messages { facility("AUTH") and level("INFO"); };
filter syslog { not filter("ssh_messages") and not filter("samba"); };

destination console { file("/dev/tty12"); };
destination messages { file("/var/log/messages"); };
destination sshd_log { file("/var/log/sshd/sshd.log"); };
destination smb_logs { file("/var/log/samba/samba.log"); };

log { source(src); filter(samba); destination(smb_logs); flags(final); );
log { source(src); filter(ssh_messages); destination(sshd_log);
flags(final); };
log { source(src); filter(syslog); destination(console); };
log { source(src); filter(syslog); destination(messages); };

Still, sshd messages are appearing in /var/log/messages.

On 4/6/2021 11:51 PM, Peter Kokai (pkokai) wrote:
> Hello,
>
> The order in the configuration matters.
> log { source(src); destination(console); filter(syslog); };
> The message flow is the following in your example source(src) -> destination(console) -> filter(syslog) -> void
> The filter recieves messages only after destination, if you switch filter and destination it should be fine.
>
> --
> kokan
>
> ________________________________________
> From: syslog-ng <syslog-ng-bounces@lists.balabit.hu> on behalf of Dan Egli <dan@newideatest.site>
> Sent: 07 April 2021 07:17
> To: syslog-ng@lists.balabit.hu
> Subject: [syslog-ng] Syslog-ng not honoring negative flag
>
> CAUTION: This email originated from outside of the organization. Do not follow guidance, click links, or open attachments unless you recognize the sender and know the content is safe.
>
>
> I'm having a bit of a problem and hope someone here can help. I'm trying
> to separate individual items into specific logs, i.e. ssh events in
> sshd.log, samba messages in samba.log, etc...
>
> I managed to come up with filters that pull out the events I started
> with, and they are going into the correct log files. But they are ALSO
> going into /var/log/messages even though I specifically have a filter on
> that one that says not to include samba or sshd events. I'll copy my
> config file here. Hopefully someone can tell me what I did wrong.
>
> Thanks!
>
> ---------------------------------------------
> @version: 3.30
>
> @include "scl.conf"
>
> options {
> threaded(yes);
> chain_hostnames(no);
> stats_freq(43200);
> mark_freq(3600);
> };
>
> source src { system(); internal(); };
>
> filter samba { program("samba"); };
> filter ssh_messages { facility("AUTH") and level("INFO"); };
> filter syslog { not filter("ssh_messages") and not filter("samba"); };
>
> destination console { file("/dev/tty12"); };
> destination messages { file("/var/log/messages"); };
> destination sshd_log { file("/var/log/sshd/sshd.log"); };
> destination smb_logs { file("/var/log/samba/samba.log"); };
>
> log { source(src); destination(smb_logs); filter(samba); flags(final); );
> log { source(src); destination(sshd_log); filter(ssh_messages);
> flags(final); };
> log { source(src); destination(console); filter(syslog); };
> log { source(src); destination(messages); filter(syslog); };
>
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