A method for transferring transmission control protocol/Internet protocol "TCP/IP" packets between a server and a client via a proxy node in an internet protocol "IP" network, the proxy node being arranged for in between the server and the client, wherein the method comprises the steps of: initiating and establishing connection between the client and the server using a three-way transmission control protocol "TCP" handshake, the client using the established connection for requesting information from the server by transferring a hypertext transfer protocol "HTTP" GET request, the proxy node capturing hypertext markup language "HTML" response packets on their way being transferred from the server to the client, the proxy node inspecting content of HTML tags for each captured HTML response packet of a type generally known to incorporate HTML data, for each HTML tag that includes a uniform resource locator "URL" pointing to either external content or content hosted directly on the server, counting the number of instances of each server hostname of a resource pointed to by the HTML tag and incrementing by one for each instance, when the number of instances of a server hostname exceeds a predetermined threshold value, modifying a port number of a host part of the URL in the HTML tag to append a non-standard port number and adding a prefix to a path part of the URL to indicate in a subsequent client request that this URL has been subject to re-direction of the URL, upon a client request, comprising the modified port number in a host part of a URL of a HTML tag of the client request, intercepting the client request and redirecting it to a standard port number, removing the added prefix from a path part of the URL of the HTML tag of the client request, checking that a part of a prefix relating to the modified port number of the HTML tag of the client request matches a port number of a TCP SYN packet, and if the prefix relating to the port number of the HTML tag does not match the port number of the client request, rejecting the connection and excluding this port number from being used in future client requests to the same server address. initiating and establishing connection between the client and the server using a three-way transmission control protocol "TCP" handshake, the client using the established connection for requesting information from the server by transferring a hypertext transfer protocol "HTTP" GET request, the proxy node capturing hypertext markup language "HTML" response packets on their way being transferred from the server to the client, the proxy node inspecting content of HTML tags for each captured HTML response packet of a type generally known to incorporate HTML data, for each HTML tag that includes a uniform resource locator "URL" pointing to either external content or content hosted directly on the server, counting the number of instances of each server hostname of a resource pointed to by the HTML tag and incrementing by one for each instance, when the number of instances of a server hostname exceeds a predetermined threshold value, modifying a port number of a host part of the URL in the HTML tag to append a non-standard port number and adding a prefix to a path part of the URL to indicate in a subsequent client request that this URL has been subject to re-direction of the URL, counting the number of instances of each server hostname of a resource pointed to by the HTML tag and incrementing by one for each instance, when the number of instances of a server hostname exceeds a predetermined threshold value, modifying a port number of a host part of the URL in the HTML tag to append a non-standard port number and adding a prefix to a path part of the URL to indicate in a subsequent client request that this URL has been subject to re-direction of the URL, upon a client request, comprising the modified port number in a host part of a URL of a HTML tag of the client request, intercepting the client request and redirecting it to a standard port number, removing the added prefix from a path part of the URL of the HTML tag of the client request, checking that a part of a prefix relating to the modified port number of the HTML tag of the client request matches a port number of a TCP SYN packet, and removing the added prefix from a path part of the URL of the HTML tag of the client request, checking that a part of a prefix relating to the modified port number of the HTML tag of the client request matches a port number of a TCP SYN packet, and if the prefix relating to the port number of the HTML tag does not match the port number of the client request, rejecting the connection and excluding this port number from being used in future client requests to the same server address.