Applicable to:
- Plesk for Linux
Symptoms
RHEL7/CentOS 7 is used.
New IP address is pointed to website, but it is not accessible:
CONFIG_TEXT: Site can't be reached
Curl utility shown the following:
# curl -I http://example.com -v
* About to connect() to example.com port 80 (
#0
)
* Trying 203.0.113.2... No route to host
* couldn't connect to host
* Closing connection
#0
curl: (7) couldn't connect to host
2. Traceroute utility shows the following:
# traceroute -T -p 80 example.com
traceroute to example.com (203.0.113.2), 30 hops max, 60 byte packets
1 gw4.example2.com (1.1.1.1) 0.211 ms 0.204 ms 0.250 ms
2 nsl-example3.com (2.2.2.2) 0.524 ms 0.369 ms 0.509 ms
16 * * *
17 * * *
18 * * *
19 * * web18.example4.com (3.3.3.3) 302.789 ms
!X
<-------- "communication administratively prohibited"
The following services are allowed on local firewall:
# firewall-cmd --list-services
ssh dhcpv6-client
Cause
Local firewall blocks connections to HTTP service.
Resolution
1. Login to the server over SSH
2. Allow HTTP service:
# firewall-cmd --permanent --add-service=http
success
# firewall-cmd --reload
success
# firewall-cmd --list-services
ssh dhcpv6-client http
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