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  1. #1
    DF VIP Member Shotgunjim's Avatar
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    Tech Ports and Firewalls

    Ok lads, a couple of brain teasers for you! :thumbs

    I have recently installed a 3com DSL router (+ wireless) now that I have my 2M pipe. Since doing this I have seen a dramatic drop in DL speed with BT (using ABC). I have had a look around the web and have set the following in the router firewall:

    Trigger ports Type Public Port Type
    6881-9 (TCP) 6800-6999 (TCP)

    I have also read that some BT clients use ports 49152-62 so may add that aswell.

    Is this set correctly? Should this now increase by speeds?

    Are opening these ports going to increase the threat potential on my machine? Would it be easier to disable the firewall on the router and stick with the SW protection I have installed already?

    I am running Peer Gaurdian2 (with P2P blocked) NAV Internet Security 2005 and standard spyware protection on XP SP1.

    Once we get this sorted I have a couple of more questions! :|

    Thanks
    Last edited by Shotgunjim; 28th April 2005 at 11:35 AM.
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  2. #2
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    unclex's Avatar
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    Default Re: Ports and Firewalls

    if you are sitting behind the router then there is a firewall in the router? is there not. you need to portscan your own router to see what it allows you to see.
    Have Fun.





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  3. #3
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    How do I do that? Is there a tool I can use?

    The setting I put in the thread are from ther router. The firewall in the router is enabled.

    I am a complete n00b when it comes to this stuff
    - Plan for Tomorrow - Live for today - Hail to the King Baby -

  4. #4
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    Default Re: Ports and Firewalls

    I see you are online
    Have Fun.





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  5. #5
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    Default Re: Ports and Firewalls

    Did a little port scan on your router and see no ports open
    Have Fun.





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  6. #6
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    I will have another look at the setting on the firewall. Or I might just turn the firewall off on the router and see if that improves things (I still have Nav Int Sec running on the PC).

    Thanks for you help with this unclex :thumbs
    - Plan for Tomorrow - Live for today - Hail to the King Baby -

  7. #7
    DF VIP Member marcode's Avatar
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    Default Re: Ports and Firewalls

    nav int sec?

  8. #8
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Norton Internet Security. Here is how I did have my router set. Does this look right?
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  9. #9
    DF VIP Member marcode's Avatar
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    Default Re: Ports and Firewalls

    norton stuff is usually crap. try turning that off and see if yer speed increases.

  10. #10
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    If unclex can run another check and let me know how it goes then I will turn off NIS and see if that has any effect. Thinking about it, this prob has occured since I upgraded to the 2005 version :nowords:
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  11. #11
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Changed to Azureus and speeds picked up straight away... fingers crossed!!
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  12. #12
    DF VIP Member BLUTO141's Avatar
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    Default Re: Ports and Firewalls

    I installed the latest version of Azureus and it told me i had to change from Tcp to Udp on port forwarding,
    :kissass :cry: Hmm I wonder which 3 this is ????

  13. #13
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Check out this site:

    http://www.pcflank.com/scanner1.htm

    and

    http://www.hackerwatch.org/probe/

    Both will give you an idea of your security. I have just run a check on my DSL speed and I am running at under 100k DL and 220UL!?!?!? Will be on the phone to F2S tomorrow
    - Plan for Tomorrow - Live for today - Hail to the King Baby -

  14. #14
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Do we know what the application trigger port is for Bit Torrent? Is it 6881?
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  15. #15
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  16. #16
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Ok so it should be UDP to TCP and have forwarding from 6881-9 AND 6969 (tracker).

    Speed doubled straight away. Will carry on the checks.

    Unclex, website was very very helpful! Karma awarded! :thumbs
    - Plan for Tomorrow - Live for today - Hail to the King Baby -

  17. #17
    DF VIP Member
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    Default Re: Ports and Firewalls

    Great
    Have Fun.





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  18. #18
    DF VIP Member
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    Default Re: Ports and Firewalls

    How to configure your router to allow fast BitTorrent downloads

    Posted Apr 24, 2005, 1:36 PM ET by Alberto Escarlate

    Update: I’m bringing this post back to the top of the weblog because since I wrote it one year ago lots of readers added great info related to many different settings of routers. BitTorrent is way more popular now than it used to be then, which explains why this entry keeps always bringing new readers here. I hope it helps.

    There sure is a lot of people that have adopted BitTorrent as the tool of choice to download movies and TV shows. However if you are using a network router you might be facing painstainkingly slow downloads (of around 10Kbps) because of a network configuration not properly set. Some think it’s a client thing and switch from one to another with no results.

    The problem’s cause is that some ports on your router are blocked by default and the solution is to open them up. We had to find it the hard way because lots of FAQ lists out there don’t give enough detail on how to solve this issue. This simple but useful tip will increase download throughput from 10 to ~240 Kbps.

    NOTE: The specific example below considers a Linksys router, but that should work for any other manufacturers (e.g. D-Link, Netgear, etc.). Our Linksys router is the Wireless-G WRT54G. Other models might have a slight different user interface but should be very similar.

    1) Open a web browser window and type your Default Gateway IP number in the address bar. It should be 192.168.1.1 in most cases.
    192.168.1.1
    2) To login leave username blank and type admin for the password (unless you have changed it before which is always advisable)
    3) Find the section that says Port Range Forwarding or similar
    4) Add in the port range 6881-6889 for Torrent files
    5) Make sure you check both protocol boxes TCP and UDP as well as the Enable setting.
    Linksys config
    6) Have the forward address set as your internal IP address 192.168.1.72 in our case. To find yours Go to Start -> Run and type in cmd.
    CMD
    This will open a DOS window. Type the command IPCONFIG and look for your ‘IP Address’.
    IPCONFIG

    7) Confirm and submit all the changes and that will probably work.

    If you’ve been through this share your experience here. If you have different routers or versions of Linksys and there’s something different let us know how to configure it.
    Have Fun.





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  19. #19
    DF VIP Member
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    Default Re: Ports and Firewalls

    Just in case it goes..
    Have Fun.





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  20. #20
    DF VIP Member Shotgunjim's Avatar
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    Default Re: Ports and Firewalls

    Just to say that this website www.portforward.com (posted HERE has alot of info regarding this. For Azureus it says that it doesnt use UDP !?

    But after checking my actually BT Exchange I find that it is f00ked and has been for the last month. BT were supposed to perform an upgrade last week and didnt do it :annoyed: So I cant say if my firewall config's are right or wrong until I can reply on my ISP.

    I actually have a 3com OfficeConnect Wireless router and the firewall config is very different to Linksys, Dlink etc as it doesn have a basic port forward, it only has trigger ports which is a different type of app/packet/etc.

    After further research, I have set up a virtual server which seems to be 3com language for port forwarding :nowords:
    Last edited by Shotgunjim; 8th May 2005 at 05:37 PM.
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