Cisco Pix 501 Very Strange issues ! Newbie needs help !!

Discussion in 'Cisco' started by fartblast@googlemail.com, Oct 4, 2006.

  1. Guest

    Hello !


    I have a cisco pix 501 using 3des site to site VPN as well as Standard
    firewall work,

    We have just moved office and are having a very strange problem that
    seems to be baffling everyone. we have a 2mb sdsl line from easynet and
    we are using a Zyxel 792H router to connect, the next step in the
    network is the Pix, everything works fine for 18 - 28 mins then a ping
    to our outside IP drops and we loose internet access BUT the VPN stays
    Up and connected and e-mail and MSN works fine for another 15 or so
    mins then that drops.

    Everything from the easynet side has been checked, even the dslam card
    has been changed, but we are still having the same issues,

    It's been suggested this morning that the NAT buffer on the PIX is
    not big enough, but I cannot fine any information on the web about
    this,

    The PIX was working fine for 2 years in the old office and was carried
    over the 500 years to our new office by hand,

    If anyone has any ideas it would be a great help, this problem is
    driving me mad!


    thanks !!
     
    , Oct 4, 2006
    #1
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  2. Brian V Guest

    <> wrote in message
    news:...
    >
    > Hello !
    >
    >
    > I have a cisco pix 501 using 3des site to site VPN as well as Standard
    > firewall work,
    >
    > We have just moved office and are having a very strange problem that
    > seems to be baffling everyone. we have a 2mb sdsl line from easynet and
    > we are using a Zyxel 792H router to connect, the next step in the
    > network is the Pix, everything works fine for 18 - 28 mins then a ping
    > to our outside IP drops and we loose internet access BUT the VPN stays
    > Up and connected and e-mail and MSN works fine for another 15 or so
    > mins then that drops.
    >
    > Everything from the easynet side has been checked, even the dslam card
    > has been changed, but we are still having the same issues,
    >
    > It's been suggested this morning that the NAT buffer on the PIX is
    > not big enough, but I cannot fine any information on the web about
    > this,
    >
    > The PIX was working fine for 2 years in the old office and was carried
    > over the 500 years to our new office by hand,
    >
    > If anyone has any ideas it would be a great help, this problem is
    > driving me mad!
    >
    >
    > thanks !!
    >


    Post your config. Have you added any more devices, even network printers in
    the new location? How many IP based devices in the new location? What's the
    user license on the 501 (10user, 50user, unlimited).
     
    Brian V, Oct 4, 2006
    #2
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  3. Guest

    Hi,

    No More devices, infact less, unlimited user licence on the pix,

    just getting the config now, is it possible as i now have another pix
    to take the config and setup from one to another pix ?

    matt
    Brian V wrote:
    > <> wrote in message
    > news:...
    > >
    > > Hello !
    > >
    > >
    > > I have a cisco pix 501 using 3des site to site VPN as well as Standard
    > > firewall work,
    > >
    > > We have just moved office and are having a very strange problem that
    > > seems to be baffling everyone. we have a 2mb sdsl line from easynet and
    > > we are using a Zyxel 792H router to connect, the next step in the
    > > network is the Pix, everything works fine for 18 - 28 mins then a ping
    > > to our outside IP drops and we loose internet access BUT the VPN stays
    > > Up and connected and e-mail and MSN works fine for another 15 or so
    > > mins then that drops.
    > >
    > > Everything from the easynet side has been checked, even the dslam card
    > > has been changed, but we are still having the same issues,
    > >
    > > It's been suggested this morning that the NAT buffer on the PIX is
    > > not big enough, but I cannot fine any information on the web about
    > > this,
    > >
    > > The PIX was working fine for 2 years in the old office and was carried
    > > over the 500 years to our new office by hand,
    > >
    > > If anyone has any ideas it would be a great help, this problem is
    > > driving me mad!
    > >
    > >
    > > thanks !!
    > >

    >
    > Post your config. Have you added any more devices, even network printers in
    > the new location? How many IP based devices in the new location? What's the
    > user license on the 501 (10user, 50user, unlimited).
     
    , Oct 4, 2006
    #3
  4. Brian V Guest

    <> wrote in message
    news:...
    > Hi,
    >
    > No More devices, infact less, unlimited user licence on the pix,
    >
    > just getting the config now, is it possible as i now have another pix
    > to take the config and setup from one to another pix ?
    >
    > matt
    > Brian V wrote:
    >> <> wrote in message
    >> news:...
    >> >
    >> > Hello !
    >> >
    >> >
    >> > I have a cisco pix 501 using 3des site to site VPN as well as Standard
    >> > firewall work,
    >> >
    >> > We have just moved office and are having a very strange problem that
    >> > seems to be baffling everyone. we have a 2mb sdsl line from easynet and
    >> > we are using a Zyxel 792H router to connect, the next step in the
    >> > network is the Pix, everything works fine for 18 - 28 mins then a ping
    >> > to our outside IP drops and we loose internet access BUT the VPN stays
    >> > Up and connected and e-mail and MSN works fine for another 15 or so
    >> > mins then that drops.
    >> >
    >> > Everything from the easynet side has been checked, even the dslam card
    >> > has been changed, but we are still having the same issues,
    >> >
    >> > It's been suggested this morning that the NAT buffer on the PIX is
    >> > not big enough, but I cannot fine any information on the web about
    >> > this,
    >> >
    >> > The PIX was working fine for 2 years in the old office and was carried
    >> > over the 500 years to our new office by hand,
    >> >
    >> > If anyone has any ideas it would be a great help, this problem is
    >> > driving me mad!
    >> >
    >> >
    >> > thanks !!
    >> >

    >>
    >> Post your config. Have you added any more devices, even network printers
    >> in
    >> the new location? How many IP based devices in the new location? What's
    >> the
    >> user license on the 501 (10user, 50user, unlimited).

    >


    Sure, just copy and paste it provided the interfaces are the same. Very very
    doubtful it's a bad pix tho, sure wouldn't act like that.
     
    Brian V, Oct 4, 2006
    #4
  5. James Guest

    Check your subnet masks either end of the PIX, the ones that define what
    networks go down the tunnel that is. They must me identical and mirrored
    networks.

    Regards

    Brian V wrote:
    > <> wrote in message
    > news:...
    >> Hi,
    >>
    >> No More devices, infact less, unlimited user licence on the pix,
    >>
    >> just getting the config now, is it possible as i now have another pix
    >> to take the config and setup from one to another pix ?
    >>
    >> matt
    >> Brian V wrote:
    >>> <> wrote in message
    >>> news:...
    >>>> Hello !
    >>>>
    >>>>
    >>>> I have a cisco pix 501 using 3des site to site VPN as well as Standard
    >>>> firewall work,
    >>>>
    >>>> We have just moved office and are having a very strange problem that
    >>>> seems to be baffling everyone. we have a 2mb sdsl line from easynet and
    >>>> we are using a Zyxel 792H router to connect, the next step in the
    >>>> network is the Pix, everything works fine for 18 - 28 mins then a ping
    >>>> to our outside IP drops and we loose internet access BUT the VPN stays
    >>>> Up and connected and e-mail and MSN works fine for another 15 or so
    >>>> mins then that drops.
    >>>>
    >>>> Everything from the easynet side has been checked, even the dslam card
    >>>> has been changed, but we are still having the same issues,
    >>>>
    >>>> It's been suggested this morning that the NAT buffer on the PIX is
    >>>> not big enough, but I cannot fine any information on the web about
    >>>> this,
    >>>>
    >>>> The PIX was working fine for 2 years in the old office and was carried
    >>>> over the 500 years to our new office by hand,
    >>>>
    >>>> If anyone has any ideas it would be a great help, this problem is
    >>>> driving me mad!
    >>>>
    >>>>
    >>>> thanks !!
    >>>>
    >>> Post your config. Have you added any more devices, even network printers
    >>> in
    >>> the new location? How many IP based devices in the new location? What's
    >>> the
    >>> user license on the 501 (10user, 50user, unlimited).

    >
    > Sure, just copy and paste it provided the interfaces are the same. Very very
    > doubtful it's a bad pix tho, sure wouldn't act like that.
    >
    >
     
    James, Dec 17, 2006
    #5
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