[TriLUG] PPTP VPN issues -- wha??

[Warren Myers]

Either... but it was more directed to Mohammed :)

My linksys has been having some issues recently... and I'm going to update
its firmware shortly.

WMM

On 4/24/07, MG <mgmonza at gmail.com> wrote:
>
> Me or Mohammed?     Unfortunately, mine was leased so no updates for me :(
>
>
> MG
>
>
> Warren Myers wrote:
> > Might a firmware update help?
> >
> > WMM
> >
> > On 4/24/07, MG <mgmonza at gmail.com> wrote:
> >>
> >> Might be totally irrelevant, and I'm no router guru (or Linux guru, for
> >> that matter) but I've had a successfully resolved VPN/router issue
> >> recently.
> >>
> >>
> >> My problem was that the older version (BEFCMUH4) of the linksys router
> I
> >> had had too high an MTU rate for Cisco VPN - it needed to be 1300 for
> >> VPN not to fragment the packets and the default MTU was 1500.  It
> >> couldn't be reset on the old router Roadrunner had given me so I
> >> exchanged it for a Motorola surfboard modem for single use, and then a
> >> Netgear router, both of which seem to have cured the VPN fragmenting
> >> problem.
> >>
> >>
> >> FWIW -
> >>
> >>
> >> MG
> >>
> >>
> >> mcoovadia at nc.rr.com wrote:
> >> > I was wondering if anyone had any issues running a PPTP VPN server at
> >> > their site, and the linksys (BEFSR11) not allowing incoming GRE
> >> traffic.
> >> >  I was successfully running a vpn server at home, when verizon
> decided
> >> > that my DSL had to go from Frame Relay to ATM.  At the same time, my
> >> > Linksys BEFSR11 (about 5 years old) died on me.
> >> >
> >> > After purchasing a new router (newer firmware), i could no longer
> >> > initiate a vpn connection to my site.  I can however, initiate pptp
> >> vpn
> >> > connections outbound (to work and such).  Yes, I do forward the
> >> > appropriate ports (1723) and although there is no setting to forward
> >> > GRE, pptp passthru is enabled (which I guess allows the outbound
> >> pptp to
> >> > be created).
> >> >
> >> > tested using MS w2k3 server pptp vpn server.  Logs show that no GRE
> >> > packets are received inbound.  decided to bypass the server, flashed
> >> > openwrt on the router, made it the pptp server, and still no luck.
> >> log
> >> > files show that no GRE inbound.
> >> >
> >> > All this leads me to believe that it is a verizon issue, since it
> >> worked
> >> > fine before Frame to ATM switch.  (2 changes at same time, dsl line
> >> > change and dead router = troubleshooting sucks).  However, they swear
> >> > that they dont block anything, and try to keep telling me that vpn is
> >> > IMPOSSIBLE without their static IP package, which is $40 more.
> >> "Dyndns
> >> > works fine for me, thx!  VPN does work without static, thx".  I can
> >> > never speak to anyone with any tech knowledge, I just get read the
> >> > manual..."have you tried rebooting..."
> >> >
> >> > My next step is to run tcpdump on my openwrt linksys and see if I see
> >> > any GRE traffic inbound.  Modem from verizon is in bridged mode...so
> >> > that should not be a problem...I think.
> >> >
> >> > Does anybody have any advice?  See anything that I missed?  Does
> >> verizon
> >> > block any GRE (remember, I have outbound vpn sessions, just not
> >> > inbound)!!  Does the newer firmaware versions of linksys not
> >> support it?
> >> >  Does openwrt not support it?
> >> >
> >> > I am so lost right now....HELP!!
> >> >
> >> > Mohammed Coovadia
> >> >
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> >
> >
> >
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-- 
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