difference between firewall and proxy in networking?
402903
The word proxy means "to act on behalf of another," and a proxy server acts on behalf of the client and the server. All requests from the clients to the Internet go to the proxy server first. The proxy evaluates them, and if allowed, re-establishes the requests on the outbound side to the Internet. Likewise, responses or initial requests coming from the Internet go to the proxy server to be evaluated. The proxy then talks to the client. Both client and server think they are communicating with one another, but, in fact, are dealing only with the proxy.\n\nWhereas a firewall is a piece of hardware and/or software which functions in a networked environment to prevent some communications forbidden by the security policy.
160318
Many variables here.\n\nI assume you are talking about a proxy server that is stopping you from accessing internet sites. Depending on how the proxy was setup you have the following options, which often will not work if a good proxy server is in place. \n\n1.Use alternative browser (i.e. Firefox) \n** This sounds too simple, but many network administrators only block for the standard browser. Using an alternative browser will often skip past the proxy server. \n2.If only certain ports have been blocked you can “Tunnel” using\n www.http-tunnel.com This program tricks the computer into thinking you are accessing an internet site but really are accessing a port for P2P or AIM. \n\nAside from these suggestions it is very difficult to bypass a well designed proxy server. Good luck!
125418
Depending upon your needs, the options range from quite simple to substantially more complex. If you just need a simple host-based software firewall, there are a number of good ones. Good free firewalls I've used include Zone Alarm, Sygate, Kerio, Outpost, and Ghostwall. If you're not opposed to getting your hands a little dirty with networking, I prefer wipfw. On my Windows boxes wipfw is the only firewall I use. Very effective, but definitely not for the timid. If you're using Linux, the iptables firewall is definitely the route to go. If your needs are a little more complex and you have an old computer lying around, you can install something like Smoothwall or IPCop and use the old PC as your firewall. I've used both and they work very well. They're both relatively easy to setup, but you'll definitely want to follow one of the step-by-step guides the first time you do it.
66281
why not just use a firewall?
419991
thats normal . that port is  used for net bios with others , so ur firewall should block it.\nThis is the single most dangerous port on the Internet. All "File and Printer Sharing" on a Windows machine runs over this port. About 10% of all users on the Internet leave their hard disks exposed on this port. This is the first port hackers want to connect to, and the port that firewalls block.
625889
Firewall is a program tat takes control of internet traffic...all internet access from outside and inside of ur computer has to pass thru the firewall.......
163846
A firewall is a combination of hardware and software that provides a security system, usually to prevent unauthorized access from outside to an internal network or intranet. A firewall prevents direct communication between network and external computers by routing communication through a proxy server outside of the network. The proxy server determines whether it is safe to let a file pass through to the network. A firewall is also called a security-edge gateway. Hope this helps. ;)
230147
When using a firewall, recommend that they disable it during troubleshooting. \nDisable proxy settings: \nClick Start >> Settings >> Control Panel. \nDouble-click Internet Options. \nClick the Connections tab. \nClick LAN Settings. \nMake sure there is not a check in the Use a proxy server box. \n\nEnable Cookies: \nClick Start >> Settings >> Control Panel. \nDouble-click Internet Options. \nClick on the Security tab. \nChoose Custom Level. \nScroll to Cookies. \nSelect Enable.
186587
Go to your settings and select the checkbox that says "Firewall, No Proxies." Save the setting and log on again...
234764
Access would be slow since the network would be seriously overloaded . Moreover it will be difficult to configure firewall settings and permission levels if u do not use proxy
201003
There is a saying that goes "prevention is better than cure". A firewall in layman terms is essentially a program wich filters network data to decide whether or not to forward them to their destination or to deny it. Well, getting to the point there are good free firewalls, such as:\n-sygate\n-zone alarm\n-xp\nsome other are also very good but are not for free, but you can make the download with emule:\n-Black Ice defender\n-Lockdown 2000\nok?
145443
Most schools and businesses use them too, for the same reason.  Basically, instead of YOU having a direct connection to the internet, setting a proxy tells you browser to send your request to another machine.  It, in turn, makes the HTTP request for you, and returns to your browser the result.\n\nTherefore, since every request passes through the proxy, it's a relatively simple matter to filter out the sites you don't want people getting to.
120973
Proxy servers are designed to filter out the content they do not want you to access.\nCertain Ports are also shut down.   I am suprised they did not shut down the ports that Yahoo uses....\n\nGood Luck!
628475
what OS (operating system) are you using what type of internet connection and what firewall
930541
As long as the proxy server is behind the firewall router you will not get out.  It is most likely settings in the router/gateway to the Internet that blocks you.  The only thing that you can probably do is find a computer that is not blocked out from using the internet (usually when I set up routers to block I use an IP or mac address if I am not blocking everybody).
897465
A router provides another layer of protection to your firewall, but it is not faster.  You won't have to log in any more, as your router logs in.   \n\nGet the router when you need it.   Just like everything else, they don't last forever. \n\nGood luck and Happy computing!
97576
a proxy goes between your computer and the internet, or your network, and an ip address is the number given to identify your computer online, by your isp.\n\nSo a proxy ip address is like using someone elses address for your time online instead of your own...