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hartecom

join:2009-08-11
Fort Worth, TX

[HSI] Charter Business Class port filtering.

I had the residential 100 mbps 5 ^ connection with Charter. I became frustrated as I couldn't get a public webpage to show with port forwarding to 80. I was assured if I upgraded to business class that issue would be resolved. I went head and took the leap to a 50 mbps 5^ connection. Received a new modem (managed modem) which I have no access to. I set one of my pc's to one of the 6 static IPs I was issued and plugged directly into the modem. Started my apache server which is viewable if I enter the IP as the URL locally but not viewable from outside my local network. What this means to me is that there is port filtering on the business class account. I had hoped to run my own mail server and web server as I have done many times when I had bonded T1's even ATT DSL allows this. A phone call to business tech support showed that even with port forwarding to private local IP has same results. I can't believe they call this a business class connection ... this is a highly restricted connection.

I'm open to suggestions but was told my issue if escalated to the engineers would just be rejected and kicked back. I am seeking now some other type connection where I can have a real internet connection.

Suggestions?


DrDrew
That others may surf
Premium
join:2009-01-28
SoCal
kudos:16
If you change the port to something else, other than 80, does it work? Is the forwarding on the modem/router setup?

hartecom

join:2009-08-11
Fort Worth, TX
The forwarding is within a managed modem that I have no access to. Only charter support can access. I have my own router which is plugged into their modem. I bypassed my router and plugged directly into their modem/router/wireless modem. I assigned one of the 5 IP addresses I was given to my linux box and set the gateway IP of their modem. It displays a webpage locally when the public IP is entered on a browser only within the local area. When I called charter as a work around I reset my server to one of the local static IP's 192.168.44.50 The charter tech then went into the modem and set up port forwarding 80 to my local static IP. Tried to access by using the gateway static public address to no success.

Ox3g3n

join:2003-06-29
Iron Mountain, MI
Reviews:
·Charter
reply to hartecom
Biz class shouldn't have port filtering. I have it and a /29(5 usable) and I run a mail and http traffic no problem. If they are giving you a /29 subnet(based on the "6" ips you posted), the modem turns into your default gateway and they route that to the CMTS. They should be publics and not 192.168's.

hartecom

join:2009-08-11
Fort Worth, TX
When you say routes http traffic are you running a webserver? a mail server? This machine surfs the web no problem with the static public IP. Sure I can route but my apache server doesn't show outside the local lan. On original post I talk about how I configured this web server with static IP using the static ip of my modem as gateway.

Ox3g3n

join:2003-06-29
Iron Mountain, MI
reply to hartecom
I have a web server(CentOS + apache) and a mail server(exchange) running on different IP's with no problems. The IP's you have, are they via DHCP or you have to staticly configure them?

hartecom

join:2009-08-11
Fort Worth, TX
ok also running a centos httpd server. No not DHCP assigned. The server has eth0 assigned 24.x.x.170 the gateway assigned 24.x.x.169. plugged directly into charter smc modem.

hartecom

join:2009-08-11
Fort Worth, TX
Wow ok Charter sorry for slandering you Found the issue
/sbin/iptables -I INPUT 1 -p tcp --dport http -j ACCEPT

I will further explore but it looks like http is routing.