Cascading a Linksys WRV54G VPN Routers Behind a WRTP54G

Discussion in 'Networking Issues' started by mddenapoli, Jan 4, 2006.

  1. mddenapoli

    mddenapoli Network Guru Member

    I am the newbie, but is it possible to cascade a Linksys WRV54G VPN Router behind a WRTP54G VOIP Router. I tried it at home and found that it will work for a while, but then the two routers would loose sync with one another. The Idea is to be able to vpn to my network from travel. I really need help. Thanks!!!
  2. DocLarge

    DocLarge Super Moderator Staff Member Member

    Set the LAN IP of your WRV54G to something other than 192.168.x.x; try using

    Set your WRTP54G up to give out "one" ip address your WRV54G will pull. Next, run "straight thru" CAT5 from one of the LAN ports on the WRTP54G to the "WAN" port of the WRV54G.

    Go back to your WRTP54G and forward ports 443 and 500 to the "WAN IP" that the WRV54G pulls. Then, go to the "Security" option on your WRV54G and turn off the "Firewall" because double NAT'ing makes it hard for quickvpn to connect in this configuration (at least it does on my ADSL connection). You now have "two" subnets; you can make one the subnet you have a private lab on and the other the subnet you use for regular internet traffic.

    I have my WRV54G behind an SMCBR18VPN firewall router and I can connect with quickvpn everywhere I go! If you've ever noticed the WRV54G having problems with good WAN refresh times, they should improve if you have another router in front. Also, if the WRTP54G is capable of NAT-T, you'll now be able to use third party vpn software like greenbow or SSH from behind the WRV54G LAN segment because NAT-T is supplied at the gateway (coming and going). If you bought the WRV54G for vpn, this is a "BIG" benefit running this type of configuration because you don't have to plug the computer directly into the modem anymore to use third party vpn software.

  3. mddenapoli

    mddenapoli Network Guru Member

    Thank you for all your help. Im going to try this configuration out tonight. Ive gotten pretty good at switching. Thanks!
  4. mddenapoli

    mddenapoli Network Guru Member

    I have one more question for you. Will my WRTP54G VoiP Router continue to protect me?
  5. DocLarge

    DocLarge Super Moderator Staff Member Member

    If it's got some sort of SPI firewall, you'll still have "network level" protection. However, I'd suggest (although not completely required, but good to have) you install Norton Internet software firewalls on each of your systems for "layered" security.

    So, yes, if your VOIP router has some sort of firewall, you'll still be protected.

  6. DocLarge

    DocLarge Super Moderator Staff Member Member

    Did you ever get this configuration to work for you?

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