Tagged Questions

0
votes
0answers
10 views

UID based routing doesn't work

I have a 12.04 LTS server with two NICs. They are connected to different networks. # ip route list table main default via 192.168.1.254 dev eth0 192.168.1.0/24 dev eth0 proto kernel scope link ...
0
votes
1answer
28 views

SSH connection refused when connecting remotly

I set up my ubuntu server and it can connect to itself when running "ssh localhost". However, when I run Putty on windows 8 I get a "connection refused" error. I have, to the best of my ability: ...
0
votes
0answers
26 views

Configuring a firewall to drop idle connections after 30 seconds

I'm trying to reproduce a bug with gvfs that normally only happens after an hour or two. But I'm trying to make it happen after just 30 seconds so that I can work on a patch. Basically I'm trying to ...
0
votes
0answers
25 views

Cannot get Samba past firewall

I have two interfaces. One (eth0, 192.168.1.x) is my network, my internet connection. I pay for my own because of bandwidth issues. The other (eth1, 192.168.0.x) is the other occupants' LAN that I ...
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
0answers
28 views

Running wifi hotspot on 12.04 without stopping the ufw firewall?

I've been using 12.04 LTS for a while, and for my own sanity and security, I've configured my ufw firewall to deny all incoming, and for outgoing just allow these ports: TCP 80, 443 for web-browsing ...
0
votes
1answer
123 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 ...
0
votes
2answers
101 views

Forward [open] Ports 7777; 2106

Hi i am new to Ubuntu (12.10) x64 Trying to forward ports for gameserver on my pc (Lineage II) Ports are opened in UFW Ports are opened in my Router Even if i disable UFW others still cant login to ...
1
vote
1answer
119 views

How to allow PPTP VPN access through APF firewall

I'm attempting to connect to a PPTP VPN. I have opened ports 47 and 1723 in the ingress rules. When APF is turned on, it fails. When APF is turned off, it works fine. I have turned on as many logging ...
0
votes
1answer
72 views

Want some advanced configuration with ufw

I've read the ubuntu developer docs regarding the ufw here, but couldn't find what I was looking for. It allows me to set rules for controlling in/out traffic based on source IP or port numbers, but ...
0
votes
0answers
55 views

setup bridge firewall

I want to setup bridge on ubuntu 12.04 something like this LAN --> ubuntu bridge -->default gateway-->Internet do I need 2 eth interface? can I setup using ethernet to connect to LAN and wlan to ...
0
votes
0answers
255 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 ...
2
votes
1answer
191 views

Which port does Ubuntu Software Center use?

I have installed the gufw firewall utility and want to make a whitelist of ports (want maximum security, but whitelisting single IPs is currently too tedious). I have so far only entered ports 53 (for ...
1
vote
1answer
156 views

How to disable Internet connection for a single process?

I know the PID of a specific process and I want to disable the Internet access for this process and only for this process, so other process can access Internet. Is there any way to do it? I ...
3
votes
2answers
117 views

Hourly events in the firewall-log, originating from Ubuntu12.04-box. How to find the reason? [duplicate]

Possible Duplicate: How do I disable Online Videos in the Unity Dash? every hour, the logfile on our firewall (IPCop 1.4.20, 192.168.1.8) lists nine lines, apparently caused by my Computer ...
1
vote
0answers
173 views

How to change Port 27000 from filtered to open status

In my ubuntu box I am running flexlm licensing software on port 27000 and I am able to pull the license from the this port to run the simulation software locally. I am also trying to run the same ...
2
votes
0answers
94 views

Failed network lookup

I'm running Kubuntu 12.10. I am having three networking problems that I think might actually have a common cause, even though they are in apparently unrelated areas. I had them in 12.04 also: When ...
0
votes
1answer
241 views

How to allow remote connections to Flask?

Inside the system, running on virtual machine, I can access the running server at 127.0.0.1:5000. Although the 'remote' address of the vm is 192.168.56.101 (ping and ssh work fine), I cannot access ...
3
votes
1answer
471 views

How to set up Wi-Fi Hotspot for sharing using 2 wired and 1 Wi-Fi network cards?

I have 3 network cards installed in my ubuntu 10.04 server and I want to configure Internet sharing and file sharing on eth1 for wired users and wlan0 for wireless users. Static ip: eth0: 192.168.1.1 ...
2
votes
1answer
179 views

How can I prevent applications sending data over the net without my consent?

Recently I had a couple of instances of programs sending data (copies of some of my config files) out over the net. I consider this very bad form on behalf of the writers, and I want to prevent it ...
2
votes
0answers
205 views

Why is SSH not accessible after installing KDE on Ubuntu Server?

I installed KDE onto my Ubuntu server, which is operating as a file server. It installed a firewall that wasn't there previously. I can't reach any of the services I had operating on the box now, ...
2
votes
1answer
2k views

MySQL server not accessible from remote machine

I have installed MySQL server in my local Ubuntu server (11.10). I can't connect to the server from a remote machine. When I tried:- nmap localhost , It shows the following PORT STATE SERVICE ...
0
votes
1answer
65 views

New User to Linux in general (Setting up a hardware firewall, needs interface config and ufw config help!)

I'm very new to this new environment (coming from Windows) and I need some help setting up a hardware firewall and web server combo. I already have my website set up and I would like some guidance on ...
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 ...
0
votes
2answers
514 views

How to make an internet server as firewall using ubuntu 11.10

i have one static broadband connection which is coming to my Ubuntu server with 2 lan cards, there are 10 more PC's to which i need to provide internet connection through Ubuntu server as well as i ...
0
votes
2answers
399 views

Firewall configuration and consequences

I'm using Ubuntu 11.10. And I want to know something about firewall in Ubuntu, because I want to know if it could be the reason why my application doesn't work properly. Little background: I'have ...
2
votes
1answer
661 views

No client internet access when setting up these iptables rules

I have read many other posts but cannot figure this out. eth0 is my external connected to a Comcast modem. The server has internet access with no issues. eth1 is internal and running DHCP for the ...
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 ...
1
vote
1answer
1k views

How do I fix UPnP Port Forwarding on Ubuntu using miniupnp?

From what I understand, Transmission bittorrent client uses the miniupnp library to do it's UPnP port forwarding of routers, however on Ubuntu upnpc (a test client of the miniupnp library) doesn't ...
1
vote
2answers
4k views

How can I use smbclient to connect to Windows shares by hostname when a firewall is enabled?

I can't connect to file shares on Windows computers using smbclient -L //hostname when the firewall is enabled. This occurs whether I'm using ufw (which allows outgoing traffic and replies back in ...
2
votes
3answers
246 views

Can I install a firewall interface without `menu`?

I need an interface for ufw (uncomplicated firewall) that does not depend on "menu", which is outdated and messing with software updates/installations. I don't mind building from source but prefer a ...
2
votes
5answers
1k views

Cannot ssh/ping an Ubuntu machine over WiFi

I have an Ubuntu 10.04 running on a laptop, connected to a local network via WiFi. This machine does not respond to pings/ssh connect requests, as if it was firewalled. However, if I ssh from this ...
1
vote
1answer
646 views

Ubuntu Linux UFW Firewall, Local Intranet Access

At home, I have Ubuntu server with the UFW firewall. What command do I type to turn on local intranet access to my web server, but keep the outside world out from my DSL modem?
0
votes
1answer
462 views

Ufw causing trouble with DHCP or WPA? [closed]

It appears that enabling UFW is causing my network connection to drop periodically on a WPA-Enterprise network, according to the network-manager GUI app (and the lack of a server response to web ...
0
votes
2answers
499 views

Trouble with UFW blocking stuff from NAT machine to inside of NAT

I've got a NAT box (Ubu 10.04) running ufw with the following sudo ufw status verbose: Status: active Logging: on (low) Default: deny (incoming), allow (outgoing) New profiles: skip To ...
8
votes
2answers
3k views

How to set up an Ubuntu 10.04 machine to accept ssh requests only from within the local network?

I am about to install 10.04 (from bare metal to replace 9.04) and I want to set it up so that I can shh into the machine, but only from other machines on my local network. (I.e., I want to reject all ...