The total value of Alibaba shares sold as part of the IPO reached $25 billion after underwriters exercised their options, making it the largest ...
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Although some web sites will minimize infrastructure costs by sending transactions through ports 80 and 443 with the same server, this can make it more difficult to administer site security, Powell says. “You can put ports 80 and 443 on the same box, but that’s the poor man’s way to do it,” he says. “You open your site up to more problems if you use one server for both ports.”
He notes that there are more than 65,000 active TCP/IP ports that hackers can use to try to enter a web site, so site operators need to set up a system that details through which ports their sites will accept data transfers. “If a request for data does not come in through port 80 or 443, then you may want to block that request,” Powell says.