IOS supporting NAT [7:34252]

Dear all, I've a customer having a 1601 router, IOS ver 11.1, 2 MB DRAM and 4 MB Flash. For this customer i need to upgrade the IOS to support NAT without upgrading the existing flash and DRAM. Is this possible??? and if possible...what's the suggested IOS version to upgrade for??? plz advise.

RE: IOS supporting NAT [7:34252]

11.2 started NAT and 11.3(T) started NAT overload or PAT. Phil -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Mohamed el-Komy Sent: Sunday, February 03, 2002 7:05 AM To: [EMAIL PROTECTED] Subject: IOS supporting NAT [7:34252] Dear all, I'