Networking_ex/amit

projects/bash_networking_security/SOLUTION

@@ -1,16 +1,19 @@
 Local DNS Server IP
 -------------------
-<ip-here>
+127.0.0.53
 
 
 
 Default gateway IP
 -------------------
-<ip-here>
+10.0.0.1
 
 
 
 DHCP IP allocation sys-logs
 -------------------
-<logs-here>
+Jun  9 07:29:19 ip-10-0-0-171 dhclient[346]: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3 (xid=0x8b932f1f)
+Jun  9 07:29:19 ip-10-0-0-171 dhclient[346]: DHCPOFFER of 10.0.0.171 from 10.0.0.1
+Jun  9 07:29:19 ip-10-0-0-171 dhclient[346]: DHCPREQUEST for 10.0.0.171 on eth0 to 255.255.255.255 port 67 (xid=0x1f2f938b)
+Jun  9 07:29:19 ip-10-0-0-171 dhclient[346]: DHCPACK of 10.0.0.171 from 10.0.0.1 (xid=0x8b932f1f)
 

projects/bash_networking_security/bastion_connect.sh

@@ -1 +1,30 @@
 #!/bin/bash
+
+# Check if KEY_PATH environment variable is set
+if [ -z "$KEY_PATH" ]; then
+  echo "KEY_PATH env var is expected"
+fi
+
+# Check if the public instance IP is provided
+if [ -z "$1" ]; then
+  echo "Please provide bastion IP address"
+  exit 5
+fi
+
+# Set variables
+BASTION_IP=$1
+PRIVATE_IP=$2
+COMMAND=$3
+
+# Connect to the public instance
+if [ -z "$PRIVATE_IP" ]; then
+  ssh -i "$KEY_PATH" ubuntu@"$BASTION_IP"
+else
+  # Connect to the private instance through the public instance
+  if [ -z "$COMMAND" ]; then
+    ssh -i "$KEY_PATH" ubuntu@"$BASTION_IP" ssh -tt -i new_key ubuntu@"$PRIVATE_IP"
+  else
+    # Run a command on the private instance
+    ssh -i "$KEY_PATH" ubuntu@"$BASTION_IP" ssh -tt -i anew_key ubuntu@"$PRIVATE_IP" "$COMMAND"
+  fi
+fi

projects/bash_networking_security/vpc.sh

@@ -1,4 +1,4 @@
-REGION=""
-VPC_ID=""
-PUBLIC_INSTANCE_ID=""
-PRIVATE_INSTANCE_ID=""
+REGION="us-east-1"
+VPC_ID="vpc-01dfe779f8f43669a"
+PUBLIC_INSTANCE_ID="i-07acba4579a7dbbc3"
+PRIVATE_INSTANCE_ID="i-04ef2bb5caef53905"