I'm trying to determine what is normal as far as latency and throughput goes for ASL with NAT enabled. We have a cable modem in our office which shows 16Mbps downstream when a PC is connected directly to the cable modem. However, when we have our Astaro appliance between the gateway and the PC with NAT enabled, we're seeing significantly slower speeds. On a more basic level, from the outside if I ping the various devices at work it appears that the Astaro box is slowing things down:
Ping Cable Modem, average 56ms
Ping Astaro WAN IP, average 58ms
Ping Server on LAN, average 70ms
From this it appears that the cable modem itself is adding about 2ms of latency as traffic passes over its bridge, and the WAN interface on the Astaro box is responding quickly. However, once the packets pass through the Astaro box into the local network there is quite a bit more time added to the response. Internal pings from that server to the Astaro box show
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