[c-nsp] Upgrading PIX 515

[simon.pitwood]

Afternoon all, hope someone out there will be able to tell me if there are
any serious issues they have experienced by upgrading the version 6.2 to
Version 6.3.4 on a PIX 515e.

I am doing this to enable VPN to run via mobile technology over it, I will
be switching 

1) no vpdn enable inside
2) no isakmp enable outside
3) no crypto map

Im not sure if this will erase the settings or need a memory upgrade?

Hardware:   PIX-515E, 32 MB RAM, CPU Pentium II 433 MHz

Regards

Simon

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