Home / server / Questions / 315242
In Process
bman
Asked: 2011-09-25 22:09:49 +0800 CST

Certain website is not accessible in my server

  • 772

I cannot access a certain website in my Linux Server.

# curl https://pgws.bpm.bankmellat.ir/pgwchannel/services/pgw?WSDL
curl: (7) couldn't connect to host

It's accessible from anywhere else but my server. I disabled ConfigServer Firewall but the problem still persist. I have no idea how I can investigate the issue and realize why this page is not accessible in my server?

I would appreciate any comment.

firewall linux

2 Answers

    • Is this URL password protected, if so you'll need to pass that info.
    • Does the server have a valid SSL certificate, if not you'll need to use the -k option.
    • Use the -v option to get verbose output
    • Try using wget with the same URL and see if that works.
    • Can you ping that server?
    • Can you traceroute that server?

    It's possible that server has blocked you on their side. Only thing you can do in that case is contact the administrator for that system. I can't access it from my system, so it's not just your system. May be restricted to certain networks/hosts.

    [edit]

    • Name or service not known == DNS problem.
    • Can you ping the IP address?
    • Try disabling your firewall temporarily to see if it is causing a problem.
    • 2

  2. The error

    curl: (7) couldn't connect to host

    means that the DNS is working fine, but the TCP connection failed. This is a networking issue at TCP level. Check the firewall and may be your MTU. If you have a bad firewall that filters all ICMP, then you might have problem if there is a lower MTU on the path that is smaller that the one from the local machine.

    To disable certificate checking use:

    curl -k https://pgws.bpm.bankmellat.ir/pgwchannel/services/pgw?WSDL
    • 0