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RV082 router blocking certain IP addresses

I have a Linksys RV082 router behind a Comcast business internet connection.  I cannot reach a group of IP addresses from the RV082 and in return the IP addresses cannot reach me (can't ping, email or tracert).  I have basic defaults on the router, nothing fancy.  I use the RV082 diagnostic tool to perform a ping to any IP address starting with 75.126 and the test fails.  However when I perform the same test from the Comcast cable modem it is successful.  So for some reason the traffic is being blocked by the router.  I have tried everything I can think of, access rules, disabling SPI, changing the MTU size, disabling the firewall completely and still no luck.  I posted on the Linksys forum and have not gotten any responses.  The only odd thing I notice is in the RV082 system log when I attempt the ping to 75.126.xxx.xxx it says it was successful but it shows the traffic actually going to our Comcast Gateway IP address.  When I perform a test ping that is successful 74.208.xxx.xxx for example it shows the traffic going to that address.
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acatech
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acatech
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2 Solutions
 
dpk_walCommented:
Not sure if this is router problem; can you hook a machine directly to modem and try pinging [take RV082 out of picture completely]. If yes, then there is some setting at the router level and we can then look into it; otherwise, it is an ISP issue.

Also, if you are successful without router, if possible, reset modem to factory settings and configure again, and check the results.

Please check and update.

Thank you.
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acatechAuthor Commented:
Yes, I can ping these addresses from the modem.  Just not from the router or anything behind it.
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dpk_walCommented:
As you cannot ping the addresses even from a machine when behind the modem; then there is some setting on the modem which is causing the issue. Reset the modem to factory defaults and reconfigure and it should help.

Thank you.
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acatechAuthor Commented:
Going to reset the router to factory settings tonight.  If it works I will award the points.
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