Questions tagged [proxy]

For questions about Proxy on network devices. This tag should only be used if it concerns configuration or troubleshooting Proxy on an on topic network device.

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27 views

Cisco S190 WSA and Fortigate 200E Firewall in Network

One of my customer has Fortigate firewalls and cisco Iron port(WSA 190) they have very small User base may be around 300. But their both firewall (200E) and Cisco proxy Server are very powerful. I ...
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1answer
32 views

Does HTTP proxy sends its own TCP packets or bypasses clients packets?

Need help to understand what's happening on TCP level when http proxy is used. When client wants to open a website through a proxy, first connection is established between client and proxy. Then ...
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1answer
117 views

What's the meaning of `circuit level gateway`?

The proxy server is an important security function provided by the Internet "circuit level gateway". Its work is mainly at the session layer of the Open Systems Interconnection (OSI) model, which acts ...
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1answer
22 views

In port forwarding, is the ultimate destination decided solely by the intermediary entity?

In port forwarding, is the ultimate destination to connect to solely decided by the intermediary entity which provides port forwarding, not by an application client? Although the page mentions ...
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2answers
48 views

Why are proxies implemented on the application level of the OSI model?

Why are all proxy servers implemented on the application level of the OSI model, and not the network level? Is it possible to implement a proxy server on the network level? Such as on the gateway ...
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1answer
37 views

Is it possible to make a TCP connection connect back to the destination port? [closed]

I'm new in this forum, I thought I could ask a question here. I've set up a proxy by using nginx and Openresty, which supports LUA scripts, that changes the body of a HTTP SOAP POST request. The ...
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2answers
184 views

Routing specific TCP/UDP packets from VLAN's to proxy server

I need to set up a solution which is for routing specific TCP/UDP packets between the devices in two separate VLANs through a proxy server. For eg: all my computers are connected to one VLAN(1) and my ...
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1answer
40 views

SOCKS Proxy, what is it ? what is the addition of using it with VPN [closed]

I am having troubles understanding SOCKS Proxies and how they actually work. why do they work when like usual proxies don't. I am using an app for mobile that let me switch between ordinary VPN ...
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2answers
407 views

Packet Forwarding / Proxy Server [closed]

Here's my setup: An Internet router connected to my ISP A Linux box connected to the router with one network card, and connected to a switch with the other. A Windows box connected to the switch. ...
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1answer
873 views

Could accessed sites over an SSH tunnel be tracked by ISP? [closed]

I created an SSH tunnel and using it as SOCKSv5 proxy on Firefox. I checked whatismyipaddress.com and some other sites, they could not detect a proxy on my computer and shows my location on the server'...
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2answers
534 views

IP Addresses of SIP packets [closed]

On this website, it says that This shows the source and destination IP addresses of the SIP packet. Note this information will change as the packet passes between SIP proxy servers. I'm ...
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1answer
48 views

Best way to place a proxy in a network?

Correct me if I am wrong, but in a LAN, when a packet sent by a computer has a destination located in the Internet, it will send it to the gateway (which is a router only right?). Now, I want to ...
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1answer
445 views

Tunneling HTTP request over SSH [closed]

I'm having this webserver inside my network behind a firewall. I also have this VPS outside my network, which is publicly reachable. Now, I was wondering if it would be possible to tunnel a connection ...
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1answer
257 views

IPTABLES port 53 closed [closed]

I'm configuring my proxy server to serve 2 Internet connections to one end. The problem is, some websites load and some don't. My cache.log file return me this when I attempt to load a website: ...
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2answers
78 views

Do bits outside netmask count when defining a range of IP's?

Still trying to understand the IP slash notation. I am configuring my OSX laptop to connect to the Internet behind the corporate proxy. For the loopback address to work on my local machine after ...
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1answer
893 views

How browsec works? [closed]

I am trying to find out how browsec works. In my college, youtube is banned. When I type youtube.com in my url, the packets carrying the url travels to the proxy server. The proxy server here blocks ...
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2answers
123 views

Network layout and configuration [closed]

I want to set up my Raspberry pi as a proxy server for one pc on my network. This is the scenario: I have a virgin media superhub (UK), I want any device that can connect to this with the wifi to ...
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1answer
126 views

Is it the Proxy Server slowing us? [closed]

So it's the usual Server vs Network battle. What's the best way to check if it's our Proxy Server that's slowing our Internet connection? I do not have access to the Proxy Server. I can only access ...
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1answer
483 views

Proxying a private network (Ethernet LAN) at workplace to home via a VPS [closed]

We have a 172.20.0.0/* LAN at workplace. I have a Computer in this LAN with IP 172.20.164.174. This Computer has both Internet connection and workplace network access. I also have a Computer in home ...
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0answers
354 views

Junos HTTP reverse proxy forwarded based on HTTP host

How do I configure AppSecure to function as a reverse proxy for my web servers based on the HTTP host header field? E.g. website1.domain.com and website2.domain.com should be reverse proxied to ...