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--- linux:network [2023/03/09 19:26] – tmade
+++ linux:network [2026/06/24 15:38] (current) – [Test] tmade
@@ Line 229: / Line 229: @@
     nc -zv 192.168.0.20 25
+or:
+    lsof -Pi :8443                     #just local test
-Or:
+or:
   echo >/dev/tcp/localhost/25
   echo >/dev/tcp/192.168.0.20/25
-Additionally you can send Mails with it:
+=== Mails with telnet ===
   ehlo testmail.org (Identify and demand SMTP-Modus)
@@ Line 246: / Line 248: @@
 Tip:
   reset (enables to send additionally emails)
+===curl===
+  curl -v -H "Host: my-server.mydomain.com" 127.0.0.1:8443                     #test connectivity locally on host to simulate external access
+  curl -v -H "Host: www.example.com" http://192.168.1.100                      #connect to 192.168.1.100 and rewrite/ manipulate hostheader to www.example.com
+  curl -X GET https://my-domain.de:6443                                        #check if port is open
+  curl --noproxy "*" http://localhost:8080                                     #check if port is open
+  curl -v http://localhost:8080
+  curl -v 1.2.3.4:80
 === jmeter (performance tests) ===