>$ ifconfig ppp0
>ppp0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
>        inet 192.168.2.51 -> 192.168.2.50 netmask 0xffffff00
>        inet6 fe80::260:8ff:fec8:88c4%ppp0 -> :: prefixlen 64 scopeid 0x3

that's the home address and then the work address, both from the work
subnet, correct?

>I can ping the Ethernet interface of the work box from the home box:
>
>home# route -n get gateway
>   route to: 192.168.2.10
>destination: 192.168.2.0
>       mask: 255.255.255.0
>    gateway: 192.168.2.50
> local addr: 192.168.2.50
>  interface: ppp0
>      flags: <UP,GATEWAY,DONE,STATIC>
> recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
>       0         0         0         0         0         0      1500         0
>home# ping -o gateway
>PING gateway.equatejobs.com (192.168.2.10): 56 data bytes
>64 bytes from 192.168.2.10: icmp_seq=0 ttl=255 time=72.907 ms

presumably the ppp gateway at "work" has a route back to "home".

>... The routing rules on the work box are:
>
>gateway$ route show |perl -pe'exit if /Internet6/'
>Routing tables
>
>Internet:
>Destination      Gateway            Flags
>default          192.168.2.1        UG
>loopback         127.0.0.1          UG
>localhost        127.0.0.1          UH
>192.168.0.0      link#1             U
>192.168.1.0      192.168.2.51       UG
>192.168.2.1      0:20:78:d9:fc:d4   UH
>192.168.2.3      0:80:ad:86:8b:3c   UH
>192.168.2.50     192.168.2.51       UH
>192.168.2.51     link#1             UH

ah, yes.  what about the other hosts at "work"?  and...can you show us
the output of netstat -rnfinet instead?  it's got a bit more info...
 
>... but from home I can't ping any hosts at work:
>
>home# route -n get az; ping -o az
>   route to: 192.168.2.3
>destination: 192.168.2.0
>       mask: 255.255.255.0
>    gateway: 192.168.2.50
> local addr: 192.168.2.50
>  interface: ppp0
>      flags: <UP,GATEWAY,DONE,STATIC>
> recvpipe  sendpipe  ssthresh  rtt,msec    rttvar  hopcount      mtu     expire
>       0         0         0         0         0         0      1500         0
>PING az.equatejobs.com (192.168.2.3): 56 data bytes
>^C
>----az.equatejobs.com PING Statistics----
>9 packets transmitted, 0 packets received, 100.0% packet loss

what does the routing table on az look like?  ie, does it know how to
get back to 192.168.1.0/24?  or how to get to 192.168.2.51?

-- 
|-----< "CODE WARRIOR" >-----|
codewarrior@daemon.org             * "ah!  i see you have the internet
twofsonet@graffiti.com (Andrew Brown)                that goes *ping*!"
andrew@crossbar.com       * "information is power -- share the wealth."