Xfinity IP addresses for firewall
I'm trying to configure my server firewall to only accept connections that are coming from an Xfinity user. I don't have a static IP, but was wondering if Xfinity owned a block, or something like that.
I'm setting this up on a FreeBSD server.
I'm setting this up on a FreeBSD server.
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It represents the range of IP addresses. This site can calculate it for you: http://www.ipaddressguide.com/cidr 69.254.0.0/15 for example represents a range of 131,072 IP addresses. 24.0.0.0/12 is for 1,048,576 IP addresses.
/15 is a CIDR notation of the netmask in base 2.
dave probvided the link, the IP you reference represents all ips from 69.254.0.0-69.255.255.255
unless your "freebsd firewall" obtains the public ip ratherthan a natted 10.x.x.x from the xfinity router ......
commonly the user will be in a /23 Ip range (512 Ips) based on their location, though those Ips/locations shift periodically.
use whatismyip.com to identify the IP/ip range to which you want to grant access.
Using VPN ipsec, will provide a more staight forward setup. using extern Dynamically updateable DNS providers, your hostname can register the IP you have at the time.
dave probvided the link, the IP you reference represents all ips from 69.254.0.0-69.255.255.255
unless your "freebsd firewall" obtains the public ip ratherthan a natted 10.x.x.x from the xfinity router ......
commonly the user will be in a /23 Ip range (512 Ips) based on their location, though those Ips/locations shift periodically.
use whatismyip.com to identify the IP/ip range to which you want to grant access.
Using VPN ipsec, will provide a more staight forward setup. using extern Dynamically updateable DNS providers, your hostname can register the IP you have at the time.
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