Hi everyone,



I am trying to find a way to go through a list of around 18'000 applications and identify in which of the 2'000 IP Sublets (ranges) they fit in. So far I thought of 2 options, but both go beyond my skills so help would be greatly appreciated. To make it easier the output below only mentions 7 applications and 5 zones.

1. turn all the primary IP addresses into numbers (done) and then find a way (probably a index/match/if/and formula) to identify which IP falls into which subnet (number between numbers) and then retrieve the name of the associated security zone.

2. create a list with all the IPs imaginable and then find a way to go through the list of primary and secondary IPs, retrieve the name of the application... then turn the IPs into numbers and find a way to identify which of them falls into which subnet and then retrieve the name of the security zone.

The 2nd option seems far more precise, but both go beyond my excel skills when needing to find a number between 2 numbers and get the name of the security zone.


A
BCD1
Application name
Primary IP AddressPrimary IP into NumberSecondary IP2
Application 110.100.1.1510,100,001,015
3
Application 210.100.1.7310,100,001,073
4
Application 3192.168.20.55192,168,020,055
5
Application 483.1.25.1083,001,025,01083.1.25.97, 83.1.25.103, 83.1.25.2096
Application 5
109.11.93.195109,011,093,195
7
Application 683.1.25.1583,001,025,015
8
Application 7109.11.93.199109,011,093,199109.11.93.200, 109.11.93.201


FGHIJ1
Security zoneIP Range startIP Range endRange start into numberRange end into number2Internet-Zone 283.1.25.083.1.25.25583,001,025,00083,001,025,2553Internal-voip10.100.1.6410.100.1.12710,100,001,06410,100,00 1,1274DMZ192.168.20.0192.168.20.255192,168,020,000192,16 8,020,2555Internet-Zone 1109.11.93.192109.11.92.255109,011,093,192109,011, 092,2556Internal-restricted10.100.1.010.100.1.6310,100,001,00010,10 0,001,063

Desired table
ABC11
Application name
IP AddressSecurity zone12Application 110.100.1.15
Internal-restricted13


14

Book1.xlsx


Thanks in advance !

If you sort the data in columns F-H so the IP ranges are in ascending order, thus:
in D13 you can use an array formula like:
Note: You should probably also interleave the valid ranges with the IP addresses that are invalid (e.g. 83.1.26.0 - 109.11.93.191), otherwise you may end up with false matches. If you can't do that and there is a risk of IP addresses that are invalid being input, a rather more complex version of the above formula would be required.

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Paul Edstein
[Fmr MS MVP - Word]

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Hi there,
First of all, thanks for the helping hand.

Was I suppose to do something special with the formula?
I am getting "a value used in the formula is of the wrong data type" error.

Thanks in advance

The formula, as posted, works fine in your workbook. See attached.

Attached Files

IP Correlations.xlsx (11.6 KB, 24 views)

__________________
Cheers,
Paul Edstein
[Fmr MS MVP - Word]