Tagged Questions
3
votes
4answers
215 views
Making iptables easier to maintain
My network is completely locked down except for a few sites which are whitelisted. This is all done through iptables, which looks something like this:
# Allow traffic to google.com
iptables -A ...
3
votes
6answers
913 views
How reliable are IP address-based firewall restrictions?
On some of my production systems that need to be accessible outside of the LAN I will sometimes add a firewall restriction at the edge to only permit traffic on, say, RDP from a specific origin IP ...
0
votes
2answers
117 views
Should I ever configure a host with a public IP address to accept traffic from a private IP address?
I connect the 'net with a public static IP (my router's IP address for NAT) and a /29 subnet (for machines behind the router).
On my router, I have:
#sh ip route | inc x.x
x.x.0.0/16 is ...
1
vote
3answers
1k views
What could prevent one Amazon EC2 instance from pinging another instance's Private IP?
I have multiple Amazon EC2 instances which need to communicate using private IPs. However, so far I've been unable to ping one instance's private IP from another instance.
I can ping external ...
2
votes
1answer
387 views
Grant access rights to a MySQL instance based on hostname instead of IP address?
I have a MySQL database that I would like to remotely access from Windows Azure which does not provide fixed IP addresses at this point. Instead of white-listing a very large IP range to cover the ...
3
votes
4answers
2k views
how can 192.168.2.10 talk to 172.18.156.65?
from what i understand, all computers need to be in the same subnet /24
so how would i get a computer to be able to connect to another computer that is set as 172 ?
one computer is behind a firewall, ...
