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Thanks a lot for your help.
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We would like to trial citrix xenapp 6.5 for external access. at present all access has been either internal or whilst connected to a vpn using sonicwalls etc. <br />
is there A: a way to either forward the required ports on the firewall (i will also need to know the port numbers required) , B: can this all be tunnelled over https instead of multiple ports or C: does this require a client gateway type device
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We would like to trial citrix xenapp 6.5 for external access. at present all access has been either internal or whilst connected to a vpn using sonicwalls etc. 
is there A: a way to either forward the required ports on the firewall (i will also need to know the port numbers required) , B: can this all be tunnelled over https instead of multiple ports or C: does this require a client gateway type device

Citrix XenApp 6.5 remote access ports

Software is any set of instructions that directs a computer to perform specific tasks or operations. Computer software consists of programs, libraries and related non-executable data (such as documentation). Computer software is non-tangible, contrasted with computer hardware, which is the physical component of computers. Software written in a machine language is known as "machine code". However, in practice, software is usually written in high-level programming languages than machine language. High-level languages are translated into machine language using a compiler or interpreter or a combination of the two.

Software

Hardware-based firewalls provide more sophisticated protection for inbound and outbound traffic than the simple Windows software firewall or the basic NAT firewalls found in routers. These devices implement techniques such as stateful packet inspection, deep packet inspection, and content filtering; and may include built-in antivirus and anti-malware protection.

Hardware Firewalls

A router is a networking device that forwards data packets between computer networks. Routers perform the "traffic directing" functions on the Internet. The most familiar type of routers are home and small office cable or DSL routers that simply pass data, such as web pages, email, IM, and videos between computers and the Internet. More sophisticated routers, such as enterprise routers, connect large business or ISP networks up to the powerful core routers that forward data at high speed along the optical fiber lines of the Internet backbone. Though routers are typically dedicated hardware devices, use of software-based routers has grown increasingly common.