Enter a valid IP address in the Start IP Address field and the same or a higher IP address in the End IP Address field.The start and end addresses define the range of allowable IP addresses from which users can log in. If you want to allow logins from a single IP address, enter the same address in both fields. For example, to allow logins from only 18.104.22.168, enter 22.214.171.124 as both the start and end addresses. You can ask your network administrator if you don't know your IP address. You can also visit www.whatismyip.com to see your current IP or simply Google What is My IP Address and it will pull up, however please make sure, you have a fixed IP (ask your adminsitrator or internet provider) before entering this IP into the security settings of your org.
The start and end IP addresses must include no more than 33,554,432 addresses (225). For example, the following ranges are valid:
- 0.0.0.0 to 126.96.36.199
- 188.8.131.52 to 184.108.40.206
- 220.127.116.11 to 18.104.22.168
- 22.214.171.124 to 126.96.36.199
However, ranges like 0.0.0.0 to 188.8.131.52 or 184.108.40.206 to 220.127.116.11 are too large.