Question about ZoomTel V3 Router (55670000)

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Internet access HI I have a PC connected to a lan port on the V3 with an address of 10.2.2.13. The V3 is also connected to an ethernet port on our network and has picked up an ip address. however when i try and use the internet I'm unsuccessful.

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  • grpeur Jan 03, 2008

    with a bit more investigating I can access the internet if I disable the firewall on the zoomtel v3. Obviously this needs to be enabled. Have you any idea what options need to be changed

  • grpeur Jan 03, 2008

    I've enabled all ports on outgoing connections but it still doesnt work.

  • grpeur Jan 03, 2008

    I've tried allowing everything in and everything out but i still cant access the internet. Is there anything else i can try

  • grpeur Jan 03, 2008

    no proxy server set up

  • grpeur Jan 03, 2008

    sorry to be a pain but i've reset the router a couple of times and tried allowing all ports and all traffice but it still doesnt work. None of the above tests worked, are there any low level tests i could try.

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  • 556 Answers

A router by design is to provide a connection between two different networks -- separate networks with different IP address ranges. If this is a corporate network or someone else's network connection of a router may be undesirable or forbidden by their policies check before proceeding. To add additional devices to a wired network can often be achieved with a switch or a hub instead of a router which is far less complicated. You have indicated there is a DHCP server to supply network addresses on the existing network making the switch or hub approach potentially available. If however you are attempting to connect a router to a single port modem device to your internet service provider this may well be the correct answer. If you are attempting to separate portions of your operations for security reasons this may be part of a reasonable approach.

In general to access the internet you need a unique IP address belonging to the network to which you are attached to operate on that network. The address range of the LAN side of the attached router must be different than else where in the attached network. So the 10.2.2 network assuming a subnet mask of 255.255.255.0 must be unique to your router and not used elsewhere for other routers in the rest of your network. In addition you need gateway address and NAT (address translation) services to share the single internet address available to the internet in most home/small business environments from your router through the necessary routers all the way to the internet service provider's access point for your operation. You also need access to DNS servers to resolve textual names like fixya.com to IP addresses to route messages. Without any of the above your connection will not work. Some environments block direct access to the internet and require the use of proxy servers -- this could also be a requirement in your environment -- the configuration to access those can differ by facility and must be answered by the local administrative staff.

I hope the above helps

Posted on Jan 03, 2008

  • 6 more comments 
  • david Jan 03, 2008

    Firewall is a somewhat generic term. From what I am gathering this device may be capable of blocking outbound port communication. A useful feature used appropriately. There are various ports used for specific internet activities. Blocking those ports can also block access to the internet. Port blocking can be done in either direction (more often inbound) is designed to allow opening the minimum number of holes in the firewall to allow required activities while preventing undesirable activities on other ports. A proxy server mentioned before can provide more intelligent monitoring of ports that a simple port blocking mechanism of a firewall. Now to identify the ports you need to open is a task I will provide some common ones to consider however depending on what you want to run/allow there may be more.

    I believe opening these only on the outbound side is required for most applications. Opening on the inbound side where required is riskier and is often only required if you have servers on your network.

    Port 80 is for standard http access though a browser and other things.

    Port 443 is required for secure http or https access to secure web sites

    ports 110 and 25 are defaults used for POP3 and SMTP mail access (only one mail option (imapi is another with different ports)) my ISP changed those and uses secure communications

    ports 20 and 21 are for FTP which some sites use to download files -- i'm not sure off the top of my head if you need both for requesting FTP transfers.

    If you host your own web server, FTP server, of mail server you may need to open (inbound this time) and or port forward ports to allow those services to be accessed from the internet.

    The registered port numbers appear in the following link however there are many optional ones that do not appear on this list.

    http://www.iana.org/assignments/port-num...



    This may help more.

  • david Jan 03, 2008

    Sorry

    Port 53 is DNS another one you probably need to open.

  • david Jan 03, 2008

    Try incoming too for 80, 443, 20, 21, and 53 your firewall may require both.

  • david Jan 03, 2008


    Do you have a proxy server in your browser config using other ports -- that could also be the problem.

  • david Jan 03, 2008

    on page 51 of your router's manual the following appears

    "By default, the firewall will allow only those packets to enter that
    you are likely to need; for example, in response to a request for a
    web page, or as part of a VoIP call you make. You may want to
    accept other, specific packets, perhaps to facilitate Internet gaming, or because you want people outside your network to access a server you have set up. You may want to prevent some users from accessing the Internet at all."

    In your case your changes have succeeded at making the latter happen.

    Did you change firewall settings from the factory settings and if so which ones on which pages -- you probably made a change you should not have? Depending on how much configuration you have done it may be best to reset the router to factory defaults, if we can figure out how and start again -- this time installing in what I will call phases.

    Configure the WAN side of the router with the necessary information to connect to your network. Things to include normally would be to accept a dynamic IP address or enter a static IP address, deal with any logon requirements like PPPoE or PPPoA and enter DNS servers or accept the server addresses dynamically. The list may vary and other items may be required. Once that is done before doing anything else try to access the internet. If it works the firewall configuration may already be set for the necessary access -- you indicated this worked before when you turned off the firewall and not now so there may be multiple configuration issues at this time. As you consider changes from the factory settings you are now aware that ports 80, 443, 20, 21, and 53 are important for internet access - to be careful changing those entries.

    When we are at this point carefully record any items you delete or changes you make == change one thing (or one page at a time) at a time and test to see if things still work. Undo the change if things are broken - test to assure things function correctly again. Try another change when things are working using the same process. This way you should catch yourself early when making a change that breaks things and can undo the damage by undoing the last recorded change.

    Your router is considerably more sophisticated that a home router. The process above moving slowly and deliberately toward a solution should keep you out of trouble. Trouble you will not be able to correct anyway.

  • david Jan 03, 2008

    To test you can do the following -- you should probably clear your browser cache between tests just to make sure you do not get a cached page.



    www.ebay.com ----- (tests http (80) and dns (53))

    click signin ------------ (test https (443) and dns (53))

    ftp.microsoft.com --- (test ftp (20 or 21) and dns (53))

    ---------------------------- you might have to actually download

    ---------------------------- something to test both ftp ports.

  • david Jan 03, 2008

    OK if it does not work and it it should lets go to the basics and review the WAN setup contents Who is the internet serviice provider and did they supply you clear requirement for connecting this router in terms of the items expected IP Address (static or dymanic), login like PPPoE, DNS addresses (static of dymanic) or should we look these up on their web site? Please provide your Internet Service Provider's name so I can assist.

  • david Jan 03, 2008

    There are two basic diagnostic commands I tend to use --



    from the command prompt window



    one is ping (try to limit your pinging of machines that are not yours -- for me it is a courtesy item -- unless you really wonder if you have access or if the server at the other end is working to determine useful information)



    You can ping an IP address such as your router another machine on your network or a DNS address to see if you can get there



    ping 192.168.0.1



    ping 10.2.2.13



    another way to use ping test the DNS connection using a URL



    ping www.google.com



    a second command to assure the contents of a computer's adapter cards is ipconfig



    to show IP address, subnet mask and default gateway --

    ipconfig



    adds in DNS addresses and some other items

    ipconfig /all



    can tell if the DHCP has appropriately supplied information to the adapter configs if dynamic or allow a viewing of static information without opening the configuration

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1.Go to Start---->Run------>type cmd----->in the black screen type ping 127.0.0.1
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Right click networkplaces--->properties--->Lan Connection Properties---->double click the internet protocol(Tcp/IP).In the next box u must select the Obtain Ip address automatically

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9.Then u can configure the ip address


Regards,
Ayyasam

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