1
vote
3answers
317 views

Securing a guest VM to give it internet access, but block access to host LAN

I have a Linux guest VM running under a Windows host. If I set the networking mode to NAT, the guest can get internet access (which I want), but can also access the hosts LAN (which I dont). For ...
3
votes
1answer
563 views

Should I dual home our webservers (DMZ/Internal network) or just do 1-to-1 NAT?

I'm setting up a rack of servers which will have 2 webservers and 10 internal servers that provide back end application support (migrating from an AWS environment). We'll have virtual machine ...
0
votes
3answers
189 views

Netflow/IPfix Analyzer for network threats and anomalies

I'm evaluating various options for Netflow/IPfix based analyzers which focus on identifying security threats and anomalies. It would be highly appreciated if someone can provide a list of tools with ...
0
votes
0answers
105 views

Firewall is down, but I still can't connect in from outside (Ubuntu)

I'm very confused right now. I have a server, Sahand, that I can connect from on campus too without issue. There's another server, Dena, that shares the same switch, etc.. also can connect to it. ...
0
votes
0answers
446 views

Network Segmentation - router, switches, or both?

I'm just looking for advice/best practices on how to properly segment my network with the goal of it being as secure as possible, but also easy to manage. Currently, the network is flat and almost ...
2
votes
2answers
400 views

Blocked connections passing through firewall. What is wrong?

In our company we have a small business router (Cisco RV082) on which we are using its standard configuration (block all incoming traffic). We also have an SMTP relay configured (using WS2008R2) so ...