pfSense

It appears that the limiters are referenced only by their index in the current list of limiters, instead of by name or a stored index number, so this leads to problems when deleting limiters when others are in use, even if the ones being deleted are not in use.

Showing this one by example. Say you have 6 limiters:

• aIN
• aOUT
• bIN
• bOUT
• cIN
• cOUT

You have firewall rules that references:

• bIN, bOUT - Limit "B" traffic
• cIN, cOUT - Limit "C" traffic

Then you delete limiters aIN and aOUT since you decide you don't want them any more.

Suddenly, your rules have changed, you now have:

• cIN, cOUT - Limit "B" traffic
• none, none - Limit "C" traffic

The indexes for the limiters shifted down, since the earlier limiters were removed, so references by index are now invalid.