ip_allow.config

The ip_allow.config file controls client access to the Traffic Server proxy cache. You can specify ranges of IP addresses that are allowed to use the Traffic Server as a web proxy cache. After you modify the ip_allow.config file, navigate to the Traffic Server bin directory and run the traffic_ctl config reload command to apply changes. When you apply the changes to a node in a cluster, Traffic Server automatically applies the changes to all other nodes in the cluster.

Format

Each line in the ip_allow.config file must have the following format:

src_ip=<range of IP addresses> action=<action> [method=<list of methods separated by '|'>]

where src_ip is the IP address or range of IP addresses of the client(s). The action ip_allow enables the specified client(s) to access the Traffic Server proxy cache, and ip_deny denies the specified client(s) to access the Traffic Server proxy cache. Multiple method keywords can be specified (method=GET method=HEAD), or multiple methods can be separated by an ‘|’ (method=GET|HEAD). The method keyword is optional and it is defaulted to ALL. This supports ANY string as the HTTP method, meaning no validation is done to check wether it is a valid HTTP method. This allows you to create filters for any method that your origin may require, this is especially useful if you use newer methods that aren’t know to trafficserver (such as PROPFIND) or if your origin uses an http-ish protocol.

By default, the ip_allow.config file contains the following lines, which allows all methods to localhost to access the Traffic Server proxy cache and denies PUSH, PURGE and DELETE to all IPs (note this allows all other methods to all IPs):

src_ip=127.0.0.1                                  action=ip_allow method=ALL
src_ip=::1                                        action=ip_allow method=ALL
src_ip=0.0.0.0-255.255.255.255                    action=ip_deny  method=PUSH|PURGE|DELETE
src_ip=::-ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff action=ip_deny  method=PUSH|PURGE|DELETE

Examples

The following example enables all clients to access the Traffic Server proxy cache:

src_ip=0.0.0.0-255.255.255.255 action=ip_allow

The following example allows all clients on a specific subnet to access the Traffic Server proxy cache:

src_ip=123.12.3.000-123.12.3.123 action=ip_allow

The following example denies all clients on a specific subnet to access the Traffic Server proxy cache:

src_ip=123.45.6.0-123.45.6.123 action=ip_deny