Website Not Accessible
Issues
When I access the website, it displays the connection failed error "Connection to 192.168.27.30:80 failed"
When I access https://abc.safesquid.com/ via proxy and log in using my corporate email ID, it displays a connection fail error "Connection to abc.safesquid.com:443 failed"
Root Causes
If the website which you are trying to reach is not up
If you are unable to reach the particular website because of internet slowness issues.
Troubleshooting
Case1
Check whether the website is opening without proxy configuration inside the browser (No proxy in the middle).
If the website is not opening without a proxy, then it is not the problem with SafeSquid.
If it is opening without a proxy, then run the below command to verify whether the website is resolving or not.
nslookup 192.168.27.30
To check SafeSquid server is connecting to 192.168.27.30 on port 80
telnet WEBSITE PORT_TO_CONNECTON
you will get this output if the website is not able to connect
telnet 192.168.27.30 80
Trying 192.168.27.30...
telnet: Unable to connect to remote host: No route to host
If the website can connect you will get the below output
telnet WEBSITE PORT_TO_CONNECTON
you will get this output if the website is not able to connect:
telnet 192.168.27.30 80
you will get this output if the website can connect
root@dev:~# telnet 192.168.27.30 80
Trying 192.168.27.30...
Connected to 192.168.27.30.
Escape character is '^]'.
Case 2
If you have a server with an on-premises environment integrated with directory services. DNS resolution is done by the directory DNS server.
To check the configuration on the local internal network and its address record pointed on an active directory (AD) or local DNS server.
Run the below commands on the command prompt for abc.safesquid.com
nslookup abc.safesquid.com
If the website is resolving to the local internal network e.g. (10.10.11.78,10.10.128.106)
You must do the conditional forwarding to safesquid local caching DNS server.
Go to the path: /etc/bind/
and create a file.
vim named.conf
root@swg:/etc/bind# vim named.conf
// This is the primary configuration file for the BIND DNS server named.
//
// Please read /usr/share/doc/bind9/README.Debian.gz for information on the
// structure of BIND configuration files in Debian, BEFORE you customize
// this configuration file.
//
// If you are just adding zones, please do that in /etc/bind/named.conf.local
include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/named.conf.default-zones";
include "/etc/bind/safesquid.dns.conf";
include "/etc/bind/abc.safesquid.com";
Go to the path
cd /etc/bind/
And create a file
vim abc.safesquid.co
Add below lines
zone "abc.safesquid.com" {
type forward;
forwarders {10.10.124.101;};
};
Command to restart bind9 service:
/etc/init.d/bind9 restart
Verify whether the website is resolving to the local IP successfully or not.