1
vote
0answers
60 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 ...
2
votes
1answer
44 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
14 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
63 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
48 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 ...
0
votes
3answers
54 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
45 views

Port won't open!

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
49 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
44 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 ...
6
votes
1answer
298 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
51 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
61 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
109 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
219 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
56 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
58 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
26 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
76 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
102 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
178 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
0answers
61 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
31 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 ...
-1
votes
1answer
505 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
150 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
64 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
36 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
193 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
52 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
2k 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
490 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 -- ...
0
votes
0answers
180 views

SSH only works with default port outside LAN

I have the openssh-server installed in one pc and I was connecting normally to it from outside and inside the LAN using SSH in the port 10465. However, one week ago or so, I could not connect to it ...
1
vote
0answers
590 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
131 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
223 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
0answers
500 views

Iptables: deny all traffic from IP except for ports 80, 22222, 22223

I've got 2 servers: ClearOS external interface 192.168.1.90 internal interface 192.168.3.1 Ubuntu Server: connected to ClearOS to IP 192.168.3.90 I need to deny all traffic from IP ...
0
votes
0answers
199 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
0answers
995 views

How to open port 5432 for Servoy (Eclipse) PostgreSQL database server

I'm trying to install Servoy Developer on Ubuntu 12.10. I get a problem during installation with the bundled PostgreSQL database server, because the port 5432 is closed. I tried the following ...
0
votes
2answers
14k 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
473 views

How can I open ports on ubuntu server?

Hello I am running my server and since the ip is not static (my ISP won't give me one because I need to be a commercial customer) I have to use a service like DynDNS but the site is only accessible in ...
0
votes
1answer
247 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
234 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
169 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
241 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 ...
0
votes
0answers
2k views

UFW port forwarding

I use UFW and here is my setup: eth0 is configured as a bridge interface (br0): inet adr:10.0.4.10 Bcast:10.0.4.255 Mask:255.255.255.0 eth2 is connected to a private network: inet ...
1
vote
0answers
444 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 ...
2
votes
1answer
450 views

Linux Firewall NAT Port Forwarding Issues

At my home I have a Linux server (it's only job is NAT, DHCP, and DNS) with Ubuntu 10.10 Server 64-bit. I have webmin installed on the server too, but I do know my way around a command line quite ...
1
vote
1answer
389 views

How do I set up user level restrictions on a gateway?

I am aware that Ubuntu Server can be used as a gateway to allow Internet connection to a LAN. Then we use IP tables or other firewall settings to restrict (for example), certain websites from being ...
2
votes
2answers
992 views

How do I set up a linux proxy for my mac

As my title suggest, I would like to set up a proxy in linux. The client that I'm using is a mac osx lion. I think I understand the theory but I keep hitting roadblocks. I started using set proxy ...
1
vote
1answer
332 views

Interactive Firewall

I have Ubuntu Server 10.04 serving as router/firewall with iptables. Also have number of client computers in LAN. So far so good. Now what I need is some sort of interactive firewall software on ...
2
votes
0answers
555 views

UFW give errors and won't auto start at boot [closed]

I just tried to enable ufw on my server, it gave me this error : ERROR: problem running ufw-init When I tried the second time, it worked. When I tried to set the default rule "sudo ufw default ...