website built on ADSL connection: slow remote not local

Hello,


I have to resolve to your help again. I think I had just
solved the FQDN problem (you may know that I am still a
networking newbie).

I setup a website with dynamic DNS service and a ADSL
connection. I have good experiene when testing the website
locally. But heck, my friends said that they have
problems browsing the website esp the forum:
The connection cannot be setup indeed. Otherwise(if the
connection is OK), they have no problems with its speed.

I think I may have a bad DNS service (owing to my ISP partly).
Now I want to confirm it or whatever the problem. My
website is www.dayspot.com the forum is
http://www.dayspot.com/forum/YaBB.pl Hopefully you don't
regard it as an Ad.


Thank you!
Wenjie

"Wenjie" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed) om...
> Hello,
>
>
> I have to resolve to your help again. I think I had just
> solved the FQDN problem (you may know that I am still a
> networking newbie).
>
> I setup a website with dynamic DNS service and a ADSL
> connection. I have good experiene when testing the website
> locally. But heck, my friends said that they have
> problems browsing the website esp the forum:
> The connection cannot be setup indeed. Otherwise(if the
> connection is OK), they have no problems with its speed.
>
> I think I may have a bad DNS service (owing to my ISP partly).
> Now I want to confirm it or whatever the problem. My
> website is www.dayspot.com the forum is
> http://www.dayspot.com/forum/YaBB.pl Hopefully you don't
> regard it as an Ad.

I was getting timeouts trying to browse you (with or without a proxy), I
couldn't ping you and traceroute was barfing too
I'm guessing either your firewall rules are too strict or there's some
packet filtering going on, either at your end or from your ISP. Either that
or you have a truly crappy connection.

PS: This was done at 16:55 GMT+1

"Draxen" <(E-Mail Removed)> wrote in message news:<3f5b55ec$0$250$(E-Mail Removed)>.. .
> "Wenjie" <(E-Mail Removed)> wrote in message
> news:(E-Mail Removed) om...
> > Hello,
> >
> >
> > I have to resolve to your help again. I think I had just
> > solved the FQDN problem (you may know that I am still a
> > networking newbie).
> >
> > I setup a website with dynamic DNS service and a ADSL
> > connection. I have good experiene when testing the website
> > locally. But heck, my friends said that they have
> > problems browsing the website esp the forum:
> > The connection cannot be setup indeed. Otherwise(if the
> > connection is OK), they have no problems with its speed.
> >
> > I think I may have a bad DNS service (owing to my ISP partly).
> > Now I want to confirm it or whatever the problem. My
> > website is www.dayspot.com the forum is
> > http://www.dayspot.com/forum/YaBB.pl Hopefully you don't
> > regard it as an Ad.
>
> I was getting timeouts trying to browse you (with or without a proxy), I
> couldn't ping you and traceroute was barfing too
> I'm guessing either your firewall rules are too strict or there's some
> packet filtering going on, either at your end or from your ISP. Either that
> or you have a truly crappy connection.
>
> PS: This was done at 16:55 GMT+1


Thank you Draxen. I was so surprised. Sometimes it is said the
connection is OK. My question is, should I set (open) some rules
to ease the connection from within my router? I only allow 80
inbound flow currently. My topology is like this:
PC --- router --- ADSL modem

Second question: You don't think it is a DNS problem?

Another question: how could I test or check the 'crappy' connection
from within my LAN? (behind the router).


Best regards,
Wenjie

(E-Mail Removed) (Wenjie) wrote in message news:<(E-Mail Removed). com>...
> "Draxen" <(E-Mail Removed)> wrote in message news:<3f5b55ec$0$250$(E-Mail Removed)>.. .
> > "Wenjie" <(E-Mail Removed)> wrote in message
> > news:(E-Mail Removed) om...
> > > Hello,
> > >
> > >
> > > I have to resolve to your help again. I think I had just
> > > solved the FQDN problem (you may know that I am still a
> > > networking newbie).
> > >
> > > I setup a website with dynamic DNS service and a ADSL
> > > connection. I have good experiene when testing the website
> > > locally. But heck, my friends said that they have
> > > problems browsing the website esp the forum:
> > > The connection cannot be setup indeed. Otherwise(if the
> > > connection is OK), they have no problems with its speed.
> > >
> > > I think I may have a bad DNS service (owing to my ISP partly).
> > > Now I want to confirm it or whatever the problem. My
> > > website is www.dayspot.com the forum is
> > > http://www.dayspot.com/forum/YaBB.pl Hopefully you don't
> > > regard it as an Ad.
> >
> > I was getting timeouts trying to browse you (with or without a proxy), I
> > couldn't ping you and traceroute was barfing too
> > I'm guessing either your firewall rules are too strict or there's some
> > packet filtering going on, either at your end or from your ISP. Either that
> > or you have a truly crappy connection.
> >
> > PS: This was done at 16:55 GMT+1
>
>
> Thank you Draxen. I was so surprised. Sometimes it is said the
> connection is OK. My question is, should I set (open) some rules
> to ease the connection from within my router? I only allow 80
> inbound flow currently. My topology is like this:
> PC --- router --- ADSL modem
>
> Second question: You don't think it is a DNS problem?
>
> Another question: how could I test or check the 'crappy' connection
> from within my LAN? (behind the router).
>
>
> Best regards,
> Wenjie

Hello again Draxen and all,


It seems that my dynamic DNS service provider is down during a period.
Now the problem could be described as below:

After a good connection, if the people use IE6.x's forward/back/refresh
buttons, the web response is very slow and likely to freeze IE.
I believe it could be a router setup problem or IE6.x - mod_perl
compatibility problem. You input will be highly appreciated.


Best regards,
Wenjie

(E-Mail Removed) (Wenjie) wrote in message news:<(E-Mail Removed). com>...
> (E-Mail Removed) (Wenjie) wrote in message news:<(E-Mail Removed). com>...
> > "Draxen" <(E-Mail Removed)> wrote in message news:<3f5b55ec$0$250$(E-Mail Removed)>.. .
> > > "Wenjie" <(E-Mail Removed)> wrote in message
> > > news:(E-Mail Removed) om...
> > > > Hello,
> > > >
> > > >
> > > > I have to resolve to your help again. I think I had just
> > > > solved the FQDN problem (you may know that I am still a
> > > > networking newbie).
> > > >
> > > > I setup a website with dynamic DNS service and a ADSL
> > > > connection. I have good experiene when testing the website
> > > > locally. But heck, my friends said that they have
> > > > problems browsing the website esp the forum:
> > > > The connection cannot be setup indeed. Otherwise(if the
> > > > connection is OK), they have no problems with its speed.
> > > >
> > > > I think I may have a bad DNS service (owing to my ISP partly).
> > > > Now I want to confirm it or whatever the problem. My
> > > > website is www.dayspot.com the forum is
> > > > http://www.dayspot.com/forum/YaBB.pl Hopefully you don't
> > > > regard it as an Ad.
> > >
> > > I was getting timeouts trying to browse you (with or without a proxy), I
> > > couldn't ping you and traceroute was barfing too
> > > I'm guessing either your firewall rules are too strict or there's some
> > > packet filtering going on, either at your end or from your ISP. Either that
> > > or you have a truly crappy connection.
> > >
> > > PS: This was done at 16:55 GMT+1
> >
> >
> > Thank you Draxen. I was so surprised. Sometimes it is said the
> > connection is OK. My question is, should I set (open) some rules
> > to ease the connection from within my router? I only allow 80
> > inbound flow currently. My topology is like this:
> > PC --- router --- ADSL modem
> >
> > Second question: You don't think it is a DNS problem?
> >
> > Another question: how could I test or check the 'crappy' connection
> > from within my LAN? (behind the router).
> >
> >
> > Best regards,
> > Wenjie
>
> Hello again Draxen and all,
>
>
> It seems that my dynamic DNS service provider is down during a period.
> Now the problem could be described as below:
>
> After a good connection, if the people use IE6.x's forward/back/refresh
> buttons, the web response is very slow and likely to freeze IE.
> I believe it could be a router setup problem or IE6.x - mod_perl
> compatibility problem. You input will be highly appreciated.
>
>
> Best regards,
> Wenjie


Sorry for the scattered information. One of my friends installed
Opera and the tests are OK (IE 'forward' 'refresh' etc disappeared).
I use Mozilla within the LAN and it is OK too. Under this
circumstance, do you have some pointers on which newsgroup should
I consult with?

BTW, the iptables in my redhat 8.0 is:
/sbin/iptables --list
Chain INPUT (policy ACCEPT)
target prot opt source destination
RH-Lokkit-0-50-INPUT all -- anywhere anywhere

Chain FORWARD (policy ACCEPT)
target prot opt source destination

Chain OUTPUT (policy ACCEPT)
target prot opt source destination

Chain RH-Lokkit-0-50-INPUT (1 references)
target prot opt source destination
ACCEPT udp -- MY_ISP_DNS_SERVER1 anywhere udp
spt:domain dpts:1025:65535
ACCEPT udp -- MY_ISP_DNS_SERVER2 anywhere udp
spt:domain dpts:1025:65535
ACCEPT tcp -- anywhere anywhere tcp
dpt:http flags:SYN,RST,ACK/SYN
ACCEPT tcp -- anywhere anywhere tcp
dpt:ssh flags:SYN,RST,ACK/SYN
ACCEPT all -- anywhere anywhere
REJECT tcp -- anywhere anywhere tcp
flags:SYN,RST,ACK/SYN reject-with icmp-port-unreachable
REJECT udp -- anywhere anywhere udp
reject-with icmp-port-unreachable


I actually don't add the following entries to the iptables:
ACCEPT udp -- MY_ISP_DNS_SERVER1 anywhere udp
spt:domain dpts:1025:65535
ACCEPT udp -- MY_ISP_DNS_SERVER2 anywhere udp
spt:domain dpts:1025:65535


Many thanks and best regards,
Wenjie