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> Notice that there is no connectivity from ESA to cms.netwitness.com: [root@esa conf]# curl -v 52.224.176.196:80 * About to connect() to 52.224.176.196 port 80 (#0) * Trying 52.224.176.196... Connection timed out * couldn't connect to host * Closing connection #0 curl: (7) couldn't connect to host [root@esa conf]# curl -v 52.224.176.196:443 * About to connect() to 52.224.176.196 port 443 (#0) * Trying 52.224.176.196... Connection timed out * couldn't connect to host * Closing connection #0 curl: (7) couldn't connect to host [root@esa conf]# wget http://52.224.176.196 --2018-02-18 15:03:17-- http://52.224.176.196/ Connecting to 52.224.176.196:80... > Configure iptables to allow communication with cms.netwitness.com: [root@esa conf]# iptables -I INPUT -s 52.224.176.196 -j ACCEPT [root@esa conf]# iptables -I OUTPUT -s 52.224.176.196 -j ACCEPT [root@esa conf]# service iptables save iptables: Saving firewall rules to /etc/sysconfig/iptables:[ OK ] > Validating communication with cms.newitness.com: [root@esa conf]# curl -V 52.224.176.196:80 curl 7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2 Protocols: tftp ftp telnet dict ldap ldaps http file https ftps scp sftp Features: GSS-Negotiate IDN IPv6 Largefile NTLM SSL libz [root@esa conf]# curl -v 52.224.176.196:80 * About to connect() to 52.224.176.196 port 80 (#0) * Trying 52.224.176.196... connected * Connected to 52.224.176.196 (52.224.176.196) port 80 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2 > Host: 52.224.176.196 > Accept: */* > < HTTP/1.1 200 OK < Server: nginx < Date: Sun, 18 Feb 2018 15:14:03 GMT < Content-Type: text/html < Content-Length: 2 < Last-Modified: Tue, 25 Jul 2017 15:48:17 GMT < Connection: keep-alive < ETag: "59776841-2" < Accept-Ranges: bytes < * Connection #0 to host 52.224.176.196 left intact * Closing connection #0 [root@esa conf]# curl -v 52.224.176.196:443 * About to connect() to 52.224.176.196 port 443 (#0) * Trying 52.224.176.196... connected * Connected to 52.224.176.196 (52.224.176.196) port 443 (#0) > GET / HTTP/1.1 > User-Agent: curl/7.19.7 (x86_64-redhat-linux-gnu) libcurl/7.19.7 NSS/3.27.1 zlib/1.2.3 libidn/1.18 libssh2/1.4.2 > Host: 52.224.176.196:443 > Accept: */* > < HTTP/1.1 400 Bad Request < Server: nginx < Date: Sun, 18 Feb 2018 15:14:07 GMT < Content-Type: text/html < Content-Length: 264 < Connection: close < <html> <head><title>400 The plain HTTP request was sent to HTTPS port</title></head> <body bgcolor="white"> <center><h1>400 Bad Request</h1></center> <center>The plain HTTP request was sent to HTTPS port</center> <hr><center>nginx</center> </body> </html> * Closing connection #0 [root@esa conf]# wget https://52.224.176.196 --2018-02-18 15:14:05-- https://52.224.176.196/ Connecting to 52.224.176.196:443... connected. ERROR: certificate common name “cms.netwitness.com” doesn't match requested host name “52.224.176.196”. To connect to 52.224.176.196 insecurely, use ‘--no-check-certificate’. [root@esa conf]# wget http://52.224.176.196 --2018-02-18 15:14:10-- http://52.224.176.196/ Connecting to 52.224.176.196:80... connected. HTTP request sent, awaiting response... 200 OK Length: 2 [text/html] Saving to: “index.html” 100%[===============================================================================================================>] 2 --.-K/s in 0s 2018-02-18 15:14:10 (155 KB/s) - “index.html” saved [2/2]