Could SAS5505 be blocking www.yahoo.com and www.hotmail.com?

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Could SAS5505 be blocking www.yahoo.com and www.hotmail.com ?

Everything is working well short of I can not get to www.yahoo.com or www.hotmail.com via the browser.
I can get to any other website via the browser but not the above two. Any idea what could be blocking these two website.

Hardware configuration as follows:
DSL modem is in bridge mode
DSL Modem is connected to the SAS5505
SAS5505 is connected to the CISCO 24 port switch (running in unmanaged mode)

BTW, I can ping www.yahoo.com but not www.hotmail.com I think hotmail has it truned off on their firewall.

Thanks in advance,
sg

SAS5505 or ASA5505? . (never heard of the SAS Cisco thingy).

But to answer your question :

Yes, the Cisco can be blocking these websites, just as easy as entering an ACL you can block whatever you like.

Thanks for the feedback!

Oops, I meant to say ASA5505 …I did set any implicit rules to block these two web site. I am not sure how and why these two sites are being blocked. Their IP address is not even in the same block…Any idea what could be going on or where I can look to resolve this problem? I am new to the CISCO environment.

Thanks in advance,
sg

Just enter the CLI.

perform a :

show run | include (here you enter the ip-adres of the website you want to check e.g.)

Now you see what rule is blocking access towards your site.

perform a : config T(erminal)

and remove the denies.

Try decreasing your Max Segment Size I've seen installations where you cannot reach certain services.

Verify that you are running with correct MTU Size as opposed to your ISP requirements. Set correct MTU size on the outside interface.

Also set MSS size with

sysopt connection tcp-mss MSS_size_in_bytes