(Archived) How to manually block HTTP(S) traffic from IP addresses
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Table of contents
Scope of Blocking
Blocking an IP or IP range, like shown below, will add respective entries to the Network ACL which is responsible for regulating incomming traffic from the internet to the infrastructure of the current environment. This means traffic from this IP or IP range is blocked before it reaches the load balancers in front of your application. Furthermore traffic is blocked before it reaches ALL load balancers of the respective environment. Please consider, that by doing so, you block traffic from reaching not only one of your applications (e.g. the one attacked), but all situated in the same environment.
Limitation
You will be prevented to block
internal IPs
special IPs like 0.0.0.0 or 127.0.0.1
invalid IPv4 or IPv6
if the maximum number of entries for the ACL is reached
General usage instructions
The general usage instructions for the cloud managment tool suite r3 can be found here.
Step-by-Step guide
Show help context
Show help example
~$ r3 net block -h
Block requests from an IP.
positional arguments:
ip The IPv4 or IPv6 Adress to be blocked (CIDR supported).
optional arguments:
-h, --help show this help message and exitBlocking an IP address
Use the command lines r3 net block to block an IP or IP ranges HTTP(S) traffic.
You can only block exactly one IP or IP range at a time
You can block by giving just the IP or the IP plus respective CIDR
The return shows you the result of the operation
Blocking example
~$ r3 net block 35.156.218.93
# Response
Project: backend Company: root360 Environment: test
+------------------+---------+----------------+
| IP/CIDR | Port | Block Response |
+------------------+---------+----------------+
| 35.156.218.93/32 | 80 | success (200) |
| 35.156.218.93/32 | 443 | success (200) |
+------------------+---------+----------------+
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