Can Ping to System 2 From System 1 - Not From System 2 To System 1?

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http://serverfault.com – I'm having trouble making my machines communicate, they are both configured properly; but I'm getting odd results from my ping tests. System 2 Information: root@DevLamp:/var/www# ifconfig eth0 Link encap:Ethernet HWaddr 00:03:ff:eb:ca:fa inet addr: Bcast: Mask: inet6 addr: fe80::203:ffff:feeb:cafa/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:45461 errors:0 dropped:0 overruns:0 frame:0 TX packets:25883 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txq (HowTos)