pfSense

You can force the type by using data-sortable-type="date" in the <th> tag for the header row of this column, but I'm not sure that would work here. It's worth a try.

You can also influence the sorting by using data-value="<x>" in the attributes of the table cell. See f467ea24cb3c3a98b370c2427ff1aa53d25f14a1 for an example. The problem with this is that the log data itself doesn't necessarily contain enough data to make assumptions usable for calculating a timestamp.

Check the sortable API docs for more ideas.

It's a non-issue with RFC 5425 format logs as the timestamp string contains enough detail and that detail is in a format which naturally sorts in the expected way.