0
votes
0answers
27 views

vino-server: local connection works but not remote connection

I would like to remotely take control over ma grandma's PC, where I installed lubundu 14.04.1. This is not a duplicate of this other question (I want to avoid teamviewer + see below). I configured ...
-1
votes
0answers
21 views

curl blocked at TMG firewall

I'm using TMG (Threat Management Gateway) firewall at my web server. When I try to use Curl from outside, the firewall blocked the connection. What rule/setting do I need to create at TMG to allow it. ...
1
vote
0answers
19 views

Can't Connect to Apache2 Server From External Device (in LAN) Nor From External IP?

I forwarded ports 80 and 443 for my apache 2 server. However, if I: try connecting to the server via external IP or try connecting to the server from a local device via my local ip, I cannot gain ...
0
votes
1answer
48 views

what could be blocking port 5060 on my ubuntu 14.04?

I have a ubuntu 14.10, and am trying to telnet into it via port 5060 but I keep failing. I always get the message "Connection closed by foreign host". I checked my iptable, it is default policy to ...
0
votes
0answers
53 views

Port 80 apparently closed ubuntu 14.04

I'm installing a small server on the company where I work. I go to whatsmyip.org and it tells me it is 190.124.165.35. When I go to canyouseeme.org it tells me that the connection timed out for port ...
2
votes
0answers
50 views

Refused connection of ssh

I installed openssh on my new Ubuntu14.04 server, turned on ssh, and enjoyed it after I finished installation. Every thing was fine; however, after just one night, I was blocked when using putty as ...
1
vote
0answers
38 views

Ubuntu Randomly Rejecting Hosts

currently I am facing a very strange problem: my Ubuntu is randomly resetting connections and I have no clue why. /etc/hosts.deny is empty (resp. just the default file with comments only, that comes ...
0
votes
0answers
69 views

iptables rules keep showing up

I just installed an ubuntu precise server, after a few weird communications issues I checked the iptables list and found: Chain INPUT (policy DROP) target prot opt source ...
0
votes
0answers
41 views

ufw is not working properly

I'm trying to enable ufw in remote ubuntu server. This server has two LXC container running. One container has nginx server running and I have hosted web application, right now every thing is working ...
0
votes
1answer
42 views

iptables ruleset blocking all network activity?

I've gone through numerous trial and error to recently discover that my iptables result is the culprit of blocking all LAN and WAN activity. I know this, because if I comment out the last line in my ...
0
votes
0answers
51 views

can't allow a specific IP in ufw

I've just got myself a VPS and am completely new to running a server. I've installed ufw as I only want to allow access to it from one particular domain hosted on another server. I've read the ...
1
vote
2answers
5k views

ubuntu 14.04 default firewall rules

I would like to know exactly which scripts are responsible for default iptables rules (no ufw, no gufw) in Ubuntu Server 14.04. After fresh installation even with ufw disabled (by default) there are ...
3
votes
1answer
210 views

basic security tools and packages that should be installed on a public facing web server

I'm a newbie in this world and I do not have a lot of knowledge about how security works on Linux systems. I recently created a droplet on DigitalOcean with Ubuntu 13 and I've been setting it up by ...
0
votes
1answer
40 views

Ubuntu forward ports, default state, forwarding not working?

im running ubuntu 12.04.4 server. I been googling the nett for answers, but could not find any.. I would like accsess a few web-gui's on my server. I have forwarder the ports in my router, worked when ...
0
votes
1answer
212 views

Iptables and bind9 to forward to google's dns

Hello i have a very hard time on getting along with iptables and bind9 as my internal network dns server. It's configured to forward my queries to google's dns (8.8.8.8). The main problem is i can't ...
0
votes
0answers
74 views

Setting up a firewall Ubuntu Server 13.10 to specified domain users of a Windows server 2008

So, here's the plan: I want to set up a firewall that allows/blocks certain websites for specified users in a Windows server domain (local); For example: For the user domain.name/user1 I want to ...
1
vote
3answers
170 views

using nmap for information regarding web host

am trying to get info of host run in linux about open/closed port the host is attacked randomly by hackers changing the content of the page.deleting files,homepage content changed. how can it be ...
0
votes
0answers
67 views

Port won't open! [duplicate]

I have a server that want to allow connections into it through port 25565, but when I test on http://www.yougetsignal.com/tools/open-ports/ it says they are closed? I have no outfacing interface ...
0
votes
0answers
80 views

how to set up iptables for dyndns server?

I have a server running with a dhcp public IP and ddclient updating my hostname from my public IP whenever it changes. My ISP has a feature for dyndns, so my router should automatically map my public ...
0
votes
0answers
75 views

Iptables help with server on 12.04?

I am trying to create a Minecraft server with port 25565 for me and my friends to access. I used to run one on my mac, where I would change the config for my firewall to allow connections through ...
7
votes
1answer
326 views

Why are certain things able to get through ufw firewall?

I should say up-front that I am TOTALLY new to Linux, Ubuntu, and the technical side of networking. I am setting up Ubuntu on a server computer and have learned a bit about configuring the ufw ...
0
votes
1answer
99 views

Setting up Ubuntu server with firewall - do I need 2 NICs?

Assume a LAN where 4 port ADSL Router, Server and PCs all connect to a network switch. Apart from working with the server, the workstations must have restricted access on what sites they can use. For ...
0
votes
2answers
87 views

Where did I fail with my basic iptables setup?

I installed iptables on a VPS (Virtual Private Server from openVZ) - Linux 2.6.32-24-pve #1 SMP Fri Sep 13 07:29:30 CEST 2013 i686 GNU/Linux. I also installed: apt-get install iptables-persistent ...
0
votes
0answers
171 views

Configure iptables for L2TP/IPSec VPN

I've been trying to get my server running a VPN so that I can connect to blocked sites in China while I'm traveling, but am having a few problems with iptables. My connection works fine if I flush my ...
0
votes
0answers
262 views

Minecraft Spigot Server BungeeCord and Iptables Help

I have had a BungeeCord server set up before and I know how it works. The problem I am having is with my iptables configuration. These are my iptables rules: #!/bin/sh #INPUT iptables -P INPUT DROP ...
1
vote
1answer
79 views

Trace IP from MAC

I have a Virtual Server running Ubuntu at a hosting provider. In the last couble of month I have experienced a dramatic increase of inbound traffic. All of it being UDP packets. Looking in the logs ...
0
votes
0answers
72 views

Telnet timing out on port 22 and port 23

Hello all So here is what I've done so far... I have turned off my firewall TEMPORALLY on both client and server, so does my router. My router has port forwarding on both ports 22 and 23 pointing to ...
0
votes
1answer
29 views

Unresolved error with browsing a website : Error 404

I am running on Ubuntu 13.04 64amd. I cannot access the website which I built online through all my browsers. It redirect to the server and it says the Error 404. I asked from the server (Through ...
0
votes
1answer
109 views

Ubuntu VPS > restrict openerp for some user

In Ubuntu VPS server, openerp is running and anyone can using this web interface. my vps server is: http:// <Public IP>:8069/. I want to allow some mac addresses and restrict to all. Here is ...
1
vote
1answer
115 views

How to allow SSH from internet when it is forwarded to a non-standard port

I'm configuring a virtual firewall using Shorewall and have a rule to forward the external port 2222 to internal port 22: DNAT inet lan:192.168.1.2:22 tcp 2222 where 192.168.1.2 is the ...
0
votes
0answers
397 views

Manually turn off firewall/unblock ssh port

Ubuntu Server 12.10 Last night I was messing with ufw, so I can enable some ports on the machine. Little did I know I just blocked port 22. Hours later closing PuTTy, I tried to connect to the server ...
1
vote
1answer
175 views

Remote ACCESS - SSH listening port filtered out by Firewall?

I am trying to access a remote server, with no physical access. I have accidentally changed the previous listening port in SSH and forgot to change it in the firewall rules. In firewall 15000 is ...
0
votes
1answer
43 views

Trouble saving iptables

I am having some issues with removing an iptable entry I have entered. I added -A PREROUTING -d 95.211.213.149/32 -i venet0 -p tcp -m tcp --dport 443 -j REDIRECT --to-ports 1194 To experiment ...
0
votes
2answers
1k views

Open source stun turn server which can do hole punch is there similar packages?

Is there any open source stun/turn server which can do hole punch like numb for Ubuntu ? Numb is a STUN/TURN server. Description A STUN/TURN server is used for NAT traversal in VoIP. ...
0
votes
1answer
187 views

Apache timeout, OK on localhost

I have been staring at this for 2 hours now and can't figure it out. My webserver was running fine until earlier today. But now it can't be accessed from the Internet. The server is apache2, but ...
0
votes
0answers
67 views

Beginner Help Configuring Iptables

I have just started to configure iptables and I am wondering what basic rules you would recommend that I use for the things that I need. Here is what I am doing: I want my default policies for ...
0
votes
0answers
41 views

How is IP getting autobanned by Ubuntu?

I have an ubuntu server running postfix/dovecot and shorewall firewall. Every so often I see in the logs that external IP address are getting banned but I can not figure out where or how this is ...
0
votes
0answers
226 views

Configure Firewall to use SSH Tunnel Through Port 80

I am having some issues configuring iptables to use SSH Tunneling through port 80. Here are my iptables rules. :INPUT DROP :FORWARD DROP :OUTPUT DROP -A INPUT -m state --state RELATED,ESTABLISHED -j ...
0
votes
0answers
66 views

Help Configuring Iptables Rules

So I am accessing my server remotely using PuTTy. I am using port 80 for SSH because port 22 is blocked at my school. I successfully configured Iptables to accept port 80 and I dropped all other ...
2
votes
1answer
3k views

Apache (and other services) work on localhost, but not IP address

My Apache server is working correctly on port 80. When I try to enable SSL on port 443, I can connect via localhost (telnet localhost 443) but not via IP address (telnet xxx.xxx.xxx.xxx 443). To ...
4
votes
1answer
637 views

Why ufw is blocking my outgoing traffic?

Here is my status: $ sudo ufw status verbose Status: active Logging: on (medium) Default: deny (incoming), allow (outgoing) New profiles: skip To Action From -- ...
1
vote
0answers
825 views

SSH connections rejected after UFW allow 22

I am trying to setup UFW on a 12.04 server. SSH works great with UFW off. Setting root@ugvps:~# ufw enable Firewall is active and enabled on system startup root@ugvps:~# ufw status Status: active ...
2
votes
0answers
151 views

How do we allow a certain mac address in a FORWARD chain through iptables?

I set the iptables rules in default. # IPTABLES IN DEFAULT iptables -P INPUT ACCEPT iptables -P OUTPUT ACCEPT iptables -P FORWARD DROP How will allow a certain mac address in a forward chain? I ...
1
vote
0answers
241 views

New Server - apache will not serve outside LAN

New server, running well 12.04 LTS on HP ML350. Apache = great, inside our LAN. Apache = timeout, from WAN (NAT forwarded from firewall). I have cleared all Iptables, read & checked every ...
0
votes
2answers
19k 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
1answer
302 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 ...
0
votes
1answer
272 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
1answer
278 views

block outgoing internet calls from inside a container

This question is not similar to my earlier post. This is pretty simple I think, I just don't know enough about networking and the ubuntu firewall. I followed this article and setup a linux container ...
4
votes
1answer
280 views

blocking all outgoing ports and its consequences

Is this the right way to block all outgoing ports? : ufw default deny outgoing But what are the consequences of doing this on amazon ec2? I'm running possibly unsafe perl scripts on my instance and ...
1
vote
0answers
498 views

Firewall stopped and disabled on system startup ERROR: problem running ufw-init

I am trying to set a VPN server on my PC (Ubuntu). I am following a tutorial , http://cviorel.easyblog.ro/2009/02/09/how-to-set-up-a-vpn-server-on-ubuntu/. I made changes in various files including ...