ANSWERED Unable to enter the IP range I want to exclude

[notameme 1]

I'm attempting to exclude the a certain IP range in the client (so that the IP's specified will go outside the VPN) but it will not let my use the range I specified, I cannot enter more than 0/32 (it will say that the IP is invalid if I do more than 32).  Just in case it helps the IP's I'm exuding are as follows.

208.78.164.0-208.78.164.255, 208.78.165.0-208.78.165.255, 208.78.166.0-208.78.166.255

any help would REALLY be appreciated, I'm desperate to get this problem fixed.
 

[OpenSourcerer 1435]

Eddie expects IP ranges in CIDR notation.

 

Choose one:

 

3 rules: Write 208.78.164.0/24, 208.78.165.0/24 and 208.78.166.0/24.

2 rules: Write 208.78.164.0/23 and 208.78.166.0/24.

1 rule: Write 208.78.164.0/22. The problem is, with this you also include 208.78.167.0/24, and I don't know if this is wanted.

[Staff 9971]

Eddie expects IP ranges in CIDR notation.

 

Choose one:

 

3 rules: Write 208.78.164.0/24, 208.78.165.0/24 and 208.78.166.0/24.

2 rules: Write 208.78.164.0/23 and 208.78.166.0/24.

1 rule: Write 208.78.164.0/22. The problem is, with this you also include 208.78.167.0/24, and I don't know if this is wanted.

 

 

Hello,

 

for any doubt or new calculations., if you don't want to make them by hand, you can use a "CIDR/VLSM calculator", for example http://www.subnet-calculator.com/cidr.php

 

Kind regards

[notameme 1]

Thanks, I briefly looked into CIDR but it looks like I misunderstood it. Looks like I should have looked into it more before asking, sorry about that.

[OpenSourcerer 1435]

Thanks, I briefly looked into CIDR but it looks like I misunderstood it. Looks like I should have looked into it more before asking, sorry about that.

 

Let me explain it to you briefly.

 

It's quite easy. An IPv4 address consists of 32 bits, divided into four 8 bit blocks: aaaaaaaa.bbbbbbbb.cccccccc.dddddddd. Every bit is either 0 or 1, of course. The /?? tells you how many of the first bits are fixed. In your example the first 24 are fixed (the blue marked ones are variable) which is equivalent to 208.78.164.0 to 208.78.164.255.

 

My other option was /23. This "unfixes" the last bit in the third IP block above (marked red). Since we're talking about bits still, we're now looking at two address blocks - 208.79.164.0 to 208.79.164.255 and 208.79.165.0 to 208.79.165.255 - two IP ranges summed up to one and taken care of with one rule.