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Why doesn't my peer to peer allow me to connect to public wifi?

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Jonathan Baker

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The wifi owner has probably restricted/blocked p2p applications

Posted on Mar 08, 2013

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How to Peer with Route Servers


Route servers do propagate prefixes from one peer to all their other peers. At least, that's how route servers typically operate today.
In figure 1, the networks do not peer directly, but all maintain BGP sessions with AS 25, the route server. Note that each AS has allprefixes, and the AS path is a hop longer because AS 25 appears in it.

Figure 1: BGP sessions towards a route server: http://d39z3tvn9akifj.cloudfront.net/ccie/wp-content/uploads/2015/02/bgp-sessions-1024x499.png

Under normal circumstances, the traffic would now flow through the route server, making running a route server on a big internet exchange a non-starter. However, BGP is smart enough to recognize that all the route server peers are connected to the same subnet (the internet exchange peering LAN). So unlike it does under other circumstances, BGP doesn't update the next hop address. This means that when AS 456 gets the route to 1.2.3.0/24 from the route server, the next hop address isn't the route server's address, but the AS 123 router's address. As such, packets don't flow through the route server, but rather, are directly delivered to the right AS, as shown in figure 2.

Figure 2: Traffic flow when peering with a route server: http://d39z3tvn9akifj.cloudfront.net/ccie/wp-content/uploads/2015/02/route-server-1024x502.png

However, there are also some networks that have an open peering policy and will peer directly with anyone, but don't peer with route servers, because that way they don't control their peerings. For instance, when there is an issue with a peer, it's useful to be able to temporarily shut down the BGP session with that peer. If the peering happens through a route server, you'll either have to wait for the route server operator to take action or shut down the BGP session towards the route server and impact lots of other peers, too.

Most networks prefer to peer through the route servers exclusively when possible, while other networks like to add direct peering in addition to the route server peering. The argument in favor of a route server only policy is that it keeps the amount of work and the number of BGP sessions to a minimum. On the other hand, adding direct peering has the advantage that if there's an issue with the route server peering, there's still the direct peering.

The BGP session towards a route server is configured exactly the same as any other BGP session used for peering. The route server itself can also be a standard BGP router, or a Unix (-like) system running BGP software. The route server configured to allow prefixes from each peer to propagate to other peers. A regular router performing route server duties will include its own AS in the AS path for prefixes it propagates, as shown in figures 2 and 3. This makes paths learned through the route server a hop longer, so paths learned through direct peering will be preferred. However, it's not uncommon for route servers to be set up to leave out their own AS number in the AS path propagated to peers, so there's no impact to AS path length.

Source: Peering with Route Servers - BGP Case Study

on Feb 20, 2015 | Computers & Internet

1 Answer

Adobe flash player will download but will not install tells me it can't contact trackers when it gos to install on my desk top.i have windows xp with internet explorer 8


The downloader is having problems using it's peer to peer method of downloading the full install, you need to download the regular installer that doesn't use peer to peer.

For internet explorer = http://www.adobe.com/go/full_flashplayer_win_ie
For other browsers = http://www.adobe.com/go/full_flashplayer_win

Sep 26, 2011 | Microsoft Internet Explorer 8

1 Answer

I cannot connect to the WIFI at work, but I can connect to my WIFI network at home, and other public networks. The wireless network at work is pushed by a D-Link 8200AP with a WAP security, just like it is...


Your laptop cannot connect to your work's wireless network because the security settings (ir WAP) in the D-Link is different to the security setting in your Netgear.
The wireless card in your laptop will need the settings changed to suit the D-Link's wireless settings ie the SSID and WAP.
You will need to change the wireless card settings in your laptop back to the Netgear's wireless settings to connect to your wireless network at home.
Some wireless cards allow you to set up different profiles for different wireless networks which allow you to switch wireless networks easily by just selecting the profile for the network you want to connect to.

Jun 25, 2011 | Apple iBook G3 Mac Notebook

1 Answer

I DO NOT HAVE E-MAIL PH402-708-7405 I CANNOT ACTIVATE THE WYFY ICON TO ACCESS WIRELESS INFO I HAVE NO SOUND


Ok, it sounds like you don't have an e-mail address. You can get free e-mail a Yahoo, Hotmail and AOL at least. However if you sign back on here via a Web browser I believe it will display your question and my answer(s).

1) Take your SN to a public Wifi access location that does not have secure access or need a pass-phrase. eg. McDonald's or your local public library.

2) Follow the short startup guide on connecting to Wifi. You can also review the steps to connect via Wifi at the www.digitalgadgets.com website.

3) Assuming it works in a non-secure environment if it still doesn't work at home then the problem is related to your home wifi setup. A very common problem is to not know/remember exactly what the "pass phrase" is. If you don't, you may have to re-set your wifi pass phrase on your router and change all the Wifi users pass phrases.

The Sylvania Netbook sound system is VERY soft. So you might simply not be able to hear it or it could be muted or the volume turned down. You can check this by double left clicking on the "speaker" on the lower right hand side of the screen on the taskbar. Make sure the "mute" box is un-checked and the lever is pushed to the top right under the word "Volume".

May 17, 2011 | Sylvania G-Netbook

1 Answer

My netbook will not go online I have tried my home wi fi and 2 diffrent public wifi


Hi,
try to do the below troubleshooting :
1) Boot up your netbook. 2) Login to windows. wait until windows finish loading. 3) Make suer your WiFi is enable. Search for the button of keyboard shortcut like 'fn' + 'f2' (wifi symbol). 4) Search for wifi network nearby. 5) connect to one of them. 6) Usually, public enable wifi is using a DHCP setup. Go to you wifi adapter setup page and make sure it's already on DHCP mode. 7) You should be able to connect to the wifi network (public DHCP enable) by now. 8) If you still can't connect to the wifi, means its not a public DHCP enable network or you got a wifi adapter problem.
Good luck ;)

Mar 04, 2011 | Sylvania G-Netbook

1 Answer

2002 Cadillac ignition turn


  • A network is a group of computers (often called nodes or hosts) that can share information through their interconnections. A network is made up of the following components:

    Computer systems (nodes or hosts)
    Transmission media--a path for electrical signals between devices
    Network interfaces--devices that send and receive electrical signals
    Protocols--rules or standards that describe how hosts communicate and exchange data
    Despite the costs of implementation and maintenance, networks actually save organizations money by allowing them to:

    Consolidate (centralize) data storage
    Share peripheral devices like printers
    Increase internal and external communications
    Increase productivity and collaboration
    There are several ways to classify networks. The following table lists several ways to describe a network.

    Peer-to-Peer In a peer to peer network, the hosts provide and consume network services, and each host has the same operating system. Advantages of peer to peer networks include:
    Easy implementation
    Inexpensive
    Disadvantages of peer to peer networks include:
    Difficult to expand (not scalable)
    Difficult to support
    Lack centralized control
    No centralized storage

    Client/Server In a client/server network, hosts have specific roles. For example, some hosts are assigned server roles which allows them to provide network resources to other hosts. Other hosts are assigned client roles which allows them to consume network resources. Unlike peer to peer networks, hosts in a client/server network have different operating systems. Advantages of client/server networks include:
    Easily expanded (scalable)
    Easy support
    Centralized services
    Easy to backup
    Disadvantages of client/server networks include:
    Server operating systems are expensive
    Requires extensive advanced planning

    Geography and Size
    Local Area Network (LAN) LANs reside in a small geographic area, like in an office. A series of connected LANs, or a LAN connected across several buildings or offices, is called an internetwork.
    Wide Area Network (WAN) A WAN is a group of LANs that are geographically isolated but connected to form a large internetwork. When implementing a WAN, remember to provide local access to user resources to prevent a high rate of WAN traffic.
    Participation
    Private A LAN or WAN for private individual or group use which may or may not be secure. Examples include home and organization (small business, corporate, institute, government) networks. Intranets and extranets, although related to the Internet, are private networks. Both an extranet and intranet are tightly controlled, and made available only to select organizations. An extranet is made available to the public and an intranet is made available internally.
    Public A large collection of unrelated computers, with each node on the network having a unique address. The Internet, for example, is a public network. Because computers are unrelated and many companies and individuals share the same communication media, the public network is by nature insecure.
    Signalling
    Baseband Baseband signalling allows one signal at a time on the network medium (cabling).
    Broadband Broadband signalling divides the network medium into multiple channels, allowing several signals to traverse the medium at the same time.





Jul 08, 2009 | 1995 Cadillac Seville

1 Answer

C13 ...same problem!!!!


A network is a group of computers (often called nodes or hosts) that can share information through their interconnections. A network is made up of the following components:

Computer systems (nodes or hosts)
Transmission media--a path for electrical signals between devices
Network interfaces--devices that send and receive electrical signals
Protocols--rules or standards that describe how hosts communicate and exchange data
Despite the costs of implementation and maintenance, networks actually save organizations money by allowing them to:

Consolidate (centralize) data storage
Share peripheral devices like printers
Increase internal and external communications
Increase productivity and collaboration
There are several ways to classify networks. The following table lists several ways to describe a network.

Peer-to-Peer In a peer to peer network, the hosts provide and consume network services, and each host has the same operating system. Advantages of peer to peer networks include:
Easy implementation
Inexpensive
Disadvantages of peer to peer networks include:
Difficult to expand (not scalable)
Difficult to support
Lack centralized control
No centralized storage

Client/Server In a client/server network, hosts have specific roles. For example, some hosts are assigned server roles which allows them to provide network resources to other hosts. Other hosts are assigned client roles which allows them to consume network resources. Unlike peer to peer networks, hosts in a client/server network have different operating systems. Advantages of client/server networks include:
Easily expanded (scalable)
Easy support
Centralized services
Easy to backup
Disadvantages of client/server networks include:
Server operating systems are expensive
Requires extensive advanced planning

Geography and Size
Local Area Network (LAN) LANs reside in a small geographic area, like in an office. A series of connected LANs, or a LAN connected across several buildings or offices, is called an internetwork.
Wide Area Network (WAN) A WAN is a group of LANs that are geographically isolated but connected to form a large internetwork. When implementing a WAN, remember to provide local access to user resources to prevent a high rate of WAN traffic.
Participation
Private A LAN or WAN for private individual or group use which may or may not be secure. Examples include home and organization (small business, corporate, institute, government) networks. Intranets and extranets, although related to the Internet, are private networks. Both an extranet and intranet are tightly controlled, and made available only to select organizations. An extranet is made available to the public and an intranet is made available internally.
Public A large collection of unrelated computers, with each node on the network having a unique address. The Internet, for example, is a public network. Because computers are unrelated and many companies and individuals share the same communication media, the public network is by nature insecure.
Signalling
Baseband Baseband signalling allows one signal at a time on the network medium (cabling).
Broadband Broadband signalling divides the network medium into multiple channels, allowing several signals to traverse the medium at the same time.

Jul 08, 2009 | Sony MDS-JE480 Mini Disc Player

2 Answers

1991 SAAB Turbo dies when running as I approach intersections


Assuming this is a 900. Check the ignition lead from the dizzy to the igition pack. I once had a similar problem, and also check for ANY air pipe leaks. These cars are especially sensitive to air leaks. Look especially at the manifold pipes. Also, make sure tha intercooler pipe is secure. Is there any excessive smoking through the tailpipe?

May 10, 2009 | 1991 Saab 900

2 Answers

Wireless internet connection


Hi, A couple of things you should check: 1. Has the "wireless internet user" enabled his Internet Sharing? If yes, how has is this user sharing it with you, through an AP/Router? 2. If he is using an AP/Router, are there any security settings enabled such as WEP, WPA, or MAC Filter? If yes, you have to get the security key and enter it into your configuration. 3. Is the DHCP Server in the AP/Router enabled? 4. If yes to #3, have you made your networking "Obtain an IP Address Automatically? 5. If no, you have to get/set the allowed IP address that you can use, Subnet Mask, Default Gateway and DNS Servers; 6. Can you ping the AP/Router or at least the "wireless internet" user IP Address. To ping, Start, Run, type "cmd", type "ping IP add of wireless internet user and/or AP/Router; 7. In your browser, enable Auto detect proxy settings for this connection; Pls post back with: a. How do you connect, a wifi card/USB or built-in? b. What AP/Router are you connecting to? c. What browser are you using, IE, Mozilla, Opera? Hope this be of some help/idea. Good luck and kind regards.

Sep 19, 2007 | Compaq Armada M700 Notebook

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