[Discuss] Verizon ADSL and port blocking

[gboyce at badbelly.com (Gregory Boyce)]

On Wed, Oct 26, 2011 at 11:26 AM, Bill Horne <bill at horne.net> wrote:
> On Tue, 2011-10-25 at 22:26 -0400, Nathan Burridge wrote:
>> Bill Horne wrote:
>> >
>> > I've decided to put a web server up for a couple of days,
>> > but Verizon DSL is blocking the ports I've tried to use.
>
>> I have no issue accessing my HP Mediasmart server on both HTTP/HTTPS
>> and I host Ventrilo and Mumble as well with no issue.
>>
>> If you are using the Westel DSL Modem, disable the firewall built in,
>> assuming you have another router and not directly connected from a
>> PC. ?I also recommend switching it to Bridge mode. ?Search on Westel
>> Bridged and there are plenty of articles with directions on how to do
>> this.
>
> I have a different ADSL modem, and AFAIK there's no firewall capability
> in it and it's already set to Bridge mode. I have opened the ports in my
> Linksys router, and tried to access both standard and "high" ports from
> different outside locaitons. Nothing has worked.
>
> If you're using non-standard ports to get through, please tell me which
> ones Verizon is leaving open. TIA.

Turn off any local firewalling, and go to http://nmap-online.com/

After a quick scan, you will likely see a mix of open, closed and
filtered ports.  Anything open or filtered should be fine to use.
Anything filtered is not.