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VOIP cannot use Firewall?

Viewing 4 posts - 1 through 4 (of 4 total)
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  • 23rd August 2002 at 13:05 #22005
    Jacky Wong
    Guest

    Dear Sir,

    I tried install the Linux Firewall to protect our VOIP system but I found
    that the voice delay increased after it.
    Is it impossible to install any firewall to protect VOIP system? If no,
    What kind of firewall I can use. Or Any suggestion can let me setup that
    only allow specified IP address to access our internal VOIP network. Please
    help.
    Many Thanks.

    23rd August 2002 at 18:20 #22006
    R
    Guest

    I know that the cisco PIX FW can open up dynamic holes in the firewall for 323 and SIP.

    9th September 2002 at 00:38 #22007
    KR
    Guest

    Jacky

    Can you send some more info on the linux set up that you were using please.

    just e-mail me at

    killa_robbs@yahoo.com

    KR

    17th September 2002 at 09:05 #22008
    Chaithanya
    Guest

    Hi,

    I think firewalls shoudn’t be a problem for VoIP. There could be several other reasons for the delay which you saw when you introduced a firewall. I saw watchguard as well as pix firewall working very well and allowing voice traffic. You should allow port 1720 for voip communication. Please try this option…..

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