OK, following the advice of the folks on this forum, I have everything I need connected. Many thanks!
The pages of the router are as follows, both identical except as noted above:
--------------------------
Setup:
Host Name: myname
Domain Name: myisp.com
Firmware Version: 1.40.3, Apr 24 2002
Time Zone: Central Time(USA & Canada
LAN IP Address: 192.168.1.1 (Different on other end)
MAC Address: (**-**-**-**-**-**)
WAN Connection Type: DHCP
--------------------------
VPN:
This Tunnel: Enable
Tunnel Name: Network A
Local Secure Group -
[Subnet] IP Addr: 192.168.1.0
Mask: 255.255.255.0
Remote Secure Group-
[Subnet] IP Addr: 192.168.1.0
Mask: 255.255.255.0
Remote Security Gateway-
[FQDNA] Fully-Qualified Domain Name: from-dyndns.org
Encryption: [3DES]
Authentication: [MD5]
Key Management: [Auto. (IKE)]
PFS (Perfect Forward Secrecy) [checked]
Pre-shared Key: **************
Key Lifetime: 3600 Sec.
--------------------------
Password:
Nothing changed from default other than the password.
--------------------------
Status:
Host Name: myname
Firmware Version: 1.40.3, Apr 24 2002
Current Time: Sep. 18 2002 Wed. 16:35:01
Login: Disable
LAN: (MAC Address: **-**-**-**-**-**)
IP Address: 192.168.2.1
Subnet Mask: 255.255.255.0
DHCP server: Disabled
WAN: (MAC Address: **-**-**-**-**-**)
IP Address: ***.***.***.***
Subnet Mask: 255.255.254.0
Default Gateway: ***.***.***.***
DNS: ***.***.***.***
***.***.***.***
***.***.***.***
DHCP Remaining Time: 17:04:23
--------------------------
DHCP:
Disabled
--------------------------
Log:
Nothing changed from default
--------------------------
Filters:
Nothing changed from default. All values at 0.
SPI: Disable
Block WAN Request: Enable
Multicast Pass Through: Enable
IPSec Pass Through: Enable
PPTP Pass Through: Enable
Remote Management: Disable
Remote Upgrade: Disable
MTU: Disable Size: 0
--------------------------
Forwarding:
Nothing changed from default.
--------------------------
Dynamic Routing
Nothing changed from default.
--------------------------
Static Routing
Nothing changed from default.
--------------------------
DMZ Host
Nothing changed from default.
--------------------------
Mac Address Clone
Mac address from ethernet cards inside of their respective LAN segments.
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The main thing that messed me up was not being able ping a unix machine. It turned out that it did not have domain name server addresses in the /etc/hosts file. Also, the gateway address was wrong, as well as the netmask.
Markku's post about the not being able to respond to pings was the final piece of the puzzle. Thanks again.