Ping & Forward Dns

[brittney mangle]

My computer can be contacted remotedly via IP address. Web server
loads when http is requested by IP, the linux server creates a
sucessful ssh session when contacted by IP yet I cannot get a
responsive ping from my IP address. My ip address is through a calbe
interent company and I have it on the public side of my router.
Pinging from an interenal machine gets a response. What would cause
this? Does this have to do with the reason my dns name does not
resolve?
Also
My router is set up so that I am portforwarding all UDP on port 53 to
my DNS server. If this is correct then when a dns request is made, my
server should receive and return address of host, correct??
thankyou
brittney

 

[Kevin D. Goodknecht [MVP]]

In

My computer can be contacted remotedly via IP address. Web server
loads when http is requested by IP, the linux server creates a
sucessful ssh session when contacted by IP yet I cannot get a
responsive ping from my IP address. My ip address is through a calbe
interent company and I have it on the public side of my router.
Pinging from an interenal machine gets a response. What would cause
this?

If you have ICMP blocked you may not be able to ping your IP from the
internet.

Does this have to do with the reason my dns name does not

resolve?

Probably not, but if you give the domain name we can test your DNS. Most of
us will not advise you to host your own public DNS if that is what you are
doing. If you do host your own DNS and you are behind a router that does
NAT. (private IP on your side) You cannot host both Public and private DNS
on MS DNS. You can use BIND this way.

Also
My router is set up so that I am port all UDP on port 53 to
my DNS server. If this is correct then when a dns request is made, my
server should receive and return address of host, correct??

DNS must return only public addresses to external users, private addresses
to internal users.