Access to own website is blocked

MachTwo · 11 Jul 2012 at 14:44

I'm running a Billion 7800N router, have had no problems with it.

About a month ago I started loosing access to my website and the email hosted on that site from home. I also cannot access the web host for my website. It works fine when not going through my router (on iPhone 3G or from the office).

I thought perhaps my ISP had started blocking access to my web servers, though if I restart my router, I can access my site for about 15-20 hours and then it's blocked again. Nothing back when I ping it.

I've flashed the 7800N to the latest drivers (1.06g) and reset to factory settings. Same thing happens.

Anyone got any ideas? I'll be forced to move the site to a different host if I can't use it.

FrenchTart · 11 Jul 2012 at 15:03

Probably a router issue. Do you have a firewall on there? What do the logs say?

Are you on static or dynamic IP out of interest? Could be that your web host blocks your IP due to too many connections/bandwidth use and the reboot causes an IP change that lets you through.

Who is your site host?

MachTwo · 11 Jul 2012 at 15:10

Thanks for your reply.

No firewall enabled on the router. ESET running on the laptops/desktops in the house.
Nothing in the log files, that was the first thing I checked.

Static IP's on the LAN but I think I'm on a dynamic IP (i.e. the IP is different when I restart the router).
Host is www.breamteam.com. I'm only really using the site for email now, so hardly any traffic going through it.

The only thing I can think of, is that this all started happening shortly after I introduced a switch between the router and my network (prior to this I had everything connected to the ethernet ports on the router). I would be very surprised if it was the switch, but I guess I should remove it and see...

Deleted member 77746 · 11 Jul 2012 at 15:18

Loads nice and fast considering it's hosted at home. Wouldn't want to put a lot of load onto it though.

What kit you using?

MachTwo · 11 Jul 2012 at 15:22

No, I'm not hosting the website

I just can't access it from my home network.

FrenchTart · 11 Jul 2012 at 15:31

As you say, switch is extremely unlikely to be causing anything - unless it's some kind of uber managed switch and has some weird setup (I'm guessing not though).

I mean your external IP address - is that static or dynamic?

MachTwo · 11 Jul 2012 at 15:34

I guessed you meant that, sorry. It's dynamic.

The switch is a ZyXEL GS108B 8 port Gigabit (Unmanaged).

Deleted member 77746 · 11 Jul 2012 at 15:42

MachTwo said:
No, I'm not hosting the website

I just can't access it from my home network.

oh I see, do a DNS crawl when you are home to do some network diagnostics.

MachTwo · 11 Jul 2012 at 15:47

Something like tracert? I did that and it went through a few connections before hitting one where it just timed out.

Deleted member 77746 · 11 Jul 2012 at 15:50

1) Tracert
2) Ping
3) NSLookup
4) DNS Records
5) Path Ping
6) Route
7) DNS Crawl

MachTwo · 11 Jul 2012 at 15:57

NSLookup fails.

DNS Records:

Attempt to get a DNS server for no-rdns-yet.2host.co.uk failed: no-rdns-yet.2host.co.uk does not exist in the DNS

FrenchTart · 11 Jul 2012 at 16:00

Next time you are blocked try accessing the site from a different IP address. If you can get in, check the site logs/status in the control panel to see if it has implemented a block on your main IP.

MachTwo · 11 Jul 2012 at 16:14

Nothing in the logs on cPanel, and it's all working fine from my office.

It's not just my site I can't access. I can't access the webhost site in the link posted above, or any other sites hosted by the same webhost.

Deleted member 77746 · 11 Jul 2012 at 16:24

DNS Issues.

What is that URL? 2host? That logo is for TSOHOST.

Domain name:
2host.co.uk

Registrant:
UK Webhosting Ltd.

Registrant type:
UK Limited Company, (Company number: 4977925)

Registrant's address:
<SNIP>

Registrar:
UK Webhosting Ltd [Tag = UKWEBHOSTING]
URL: http://www.tsohost.co.uk

Relevant dates:
Registered on: 12-Apr-2004
Expiry date: 12-Apr-2019
Last updated: 01-May-2012

Registration status:
Registered until expiry date.

Name servers:
ns1.2host.co.uk 195.62.28.14
ns2.2host.co.uk 95.154.202.14
ns3.2host.co.uk 195.62.29.2

WHOIS lookup made at 16:28:42 11-Jul-2012

--
<SNIP>

MachTwo · 11 Jul 2012 at 16:25

With my router? How come it works everywhere else?

Deleted member 77746 · 11 Jul 2012 at 16:32

MachTwo said:
With my router? How come it works everywhere else?

What is your site URL?

p_r_i_m_e · 11 Jul 2012 at 16:34

I suspect the firewall on the webserver is blocking you after possibly several failed login attempts from something and a reboot of the router get you a new ip address so it lets you in again

MachTwo · 11 Jul 2012 at 16:36

Site url is www.sstsim.com.

The only thing I can think of that access the web server is my Thunderbird email client. Perhaps it's worth a try to reset the router and disable this email account and see if it still drops out.

Deleted member 77746 · 11 Jul 2012 at 16:43

1) When you did an NS Lookup did you do;

nslookup www.sstsim.com
nslookup sstsim.com

and return: Attempt to get a DNS server for no-rdns-yet.2host.co.uk failed: no-rdns-yet.2host.co.uk does not exist in the DNS.

I did a DNS crawl, which give me the following info;
ns1.breamteam.com
ns2.breamteam.com

2) Who are you with for your ISP?
3) What DNS have you got for your workstation (CMD > IPCONFIG /all)

MachTwo · 11 Jul 2012 at 16:48

I got the following when looking up the DNS records:

Attempt to get a DNS server for no-rdns-yet.2host.co.uk failed: no-rdns-yet.2host.co.uk does not exist in the DNS.

ISP is BT Broadband, ADSL.

Under IP Config - there are several DNS entries. You want the DNS server? It just points to my router IP.