Tagged Questions
2
votes
1answer
31 views
How do I allow local subnets in ufw?
I recently got IPv6 connectivity at home and now I would like to allow connections to my home server via IPv6 from the LAN only. The trick is that the IPv6 address/prefix assigned to the server is ...
0
votes
1answer
121 views
How do I configure ufw to only allow outgoing/established connections for a IPv6 network?
How do I configure ufw to only allow outgoing/established connections for a IPv6 network?
I am using an old computer with 12.04 installed to create an IPv6 router for my local network. I would like ...
2
votes
2answers
56 views
How can I cancel all the current communication from particular IP in Ubuntu 12.04?
I am working on Ubuntu 12.04 firewall. I want to deny any IP on runtime. I am using "ufw deny from IP". It's working for future connections. But it is not cancelling the existing connections like ssh.
...
0
votes
0answers
253 views
Problems allowing outgoing multicast in ufw
I am having problems configuring the uncomplicated firewall (ufw) to allow outgoing multicast traffic. I am blocking all in and outgoing connections as the default policy. I have supplemented with the ...
0
votes
1answer
158 views
Can't open a port
I need to run an app on my computer which connects to local port 49100. So everything runs on one computer.
I tried adding rules to gufw, firestarter, manually:
sudo iptables -A INPUT -p tcp --dport ...
0
votes
0answers
764 views
IP forwarding not working in Ubuntu 12.04 Server
I'm having trouble getting IP forwarding going in Ubuntu 12.04 server with UFW. I'm trying to get OpenVPN working. I have two interfaces, eth0 and tun0, and they can't ping each other.
I've made the ...
6
votes
1answer
539 views
Block Ping from a specific IP
I am on a private LAN 192.168.1.0/24. My ip is 192.168.1.3, I want to block only ping requests from 192.168.1.2.
I am running ubuntu 11.10. I found two links
First tells how to block an IP but not ...
2
votes
2answers
5k views
What are ICMP redirects and should they be blocked?
After enabling ufw and the Tiger security auditor, I see warnings saying:
The system accepts ICMP redirection messages
What are ICMP redirection messages? Should they be disabled for security ...
2
votes
1answer
214 views
Enforce outgoing port for a machine inside LAN
I'm running Ubuntu Server (natty) in as a gateway/firewall in front of a private network. I have successfully enabled IP forwarding and NAT so the machines behind the firewall can connect to Internet ...
4
votes
1answer
1k views
How to connect to a CISCO VPN through UFW
I am running Ubuntu 11.04 (64 bits version) and would like to be able to get connected to the VPN server (CISCO) of my company. I am able to get connected to the VPN server when I disable UFW but, ...
