The biggest issue is the need to allow any remote connection to high numbered ports on the server. 最大的问题是需要允许从任意远程终端到服务器高位端口的连接。
Bookkeeping is pretty much entirely computerized, but an outside accounting firm, operating from remote terminals, tends to any accounting requests. 记帐的工作几乎都由计算机负责，此外只请了会计事务所通过远程终端处理所需清算的帐目。
