I have a Cisco 2600 version 12.0(7). The problem that I am having with it is that I cannot see some websites. I try to log into mail.yahoo.com and it won?t display the page, the same goes for craigslist.org and others sites. My DNS are resolving the names because when I ping from the router itself I get back the correct IP for the website. Also when I hook up a 1700 I could ping all the sites and I get a response from them, but once I connect the RG-45 to the fast Ethernet it doesn?t allow me to ping or view the sites. What could be the problem? Could it be my configuration or something else? If so I would gladly appreciate the help.
