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Is there a limit to a the IDS System Variable length

p.mckay
Level 1
Level 1

I have a large number of devices that perform the same function in numerous networks. So I keep adding them to a variable that now has a total of 35 IP addresses in the variable. Then I created a filter for IDS Sig 2100 ICMP Network Sweep w/Echo using the $USER-ADDRS3. This all worked for a while but since I have continued to add items to the variable and at some point the filter seems to have stopped working. So I am just wondering if there is a limitation that has been exceeded.

2 Replies 2

scothrel
Level 3
Level 3

I beleive the variables are limited to 1000 characters. If you are getting near that point, I suggest that you split your list into two lists and

add both lists to your filter(s).

I tried to use $USER-ADDRS1,$USER-ADDRS2,$USER-ADDRS3 in say the source address but this does not seem to work. I get the Validation Error (Source Address). So I guess I have to create duplicate filters to use each variable.

With this in minde then is there a character limitation also on the Source and Destination address fields in a filter?

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