Ubuntu Security :: How To Unblock 4662 Port
Sep 5, 2010I must be behind a firewall in this ubuntu 9.10 karmic. i need to access the Standard client TCP port. how to put a port into the firewall so that it is not blocked?
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Ubuntu Security :: How Can I Unblock Domain In 7.04
Sep 17, 2010Is there someone who can tell me how can i unblock a domain in ubuntu 7.04 ?
View 1 Replies View RelatedUbuntu Security :: Firehol - How To Unblock Transmission
Jun 15, 2011in my firehol.conf there is: client "http https ftp pop3 pop3s smtp cups dhcp dns lpd mysql ntp rdp smtps samba ssh submission telnet p2p" accept When I put: client all accept Transmission is working as it should. I still want to block unknown clients.How can I unblock it?
View 2 Replies View RelatedUbuntu Security :: SSH Port Forwarding, Disable Or Edit A Forwarded Port?
Nov 1, 2010sudo ssh -L 750:192.168.123.103:873 username@192.168.123.103It does exactly what it's supposed to do, but how do i edit / remove this rule?Is there some config file where i can alter the forwarding? How does it get stored?Im using Ubuntu 10.10Server Edition (allthough i recon it would be pretty much the same across all versions
View 5 Replies View RelatedSecurity :: Iptables: Verify Traffic On Port To Check If It Is Legitimate For That Port?
Apr 18, 2011Is there any way to verify if packets being trafficked over a certain port are valid for the service you want to use this port for?
One obvious example that probably clarifies my question:
When I open port 443 (outgoing or incoming) for https/ssl traffic, I don't want this port to be used for say openvpn traffic.
Thus: when someone wants to surf to a website with https, it should be ok but if someone wants to connect to his home openvpn server over that same port, it should be blocked.
Security :: Port-bind Shellcodes Work With Port-forwarding?
Apr 27, 2011I'll explain this in one sentence: Is it possible to program a port-binding shellcode in which people across the Internet can connect to, without being thwarted by the router blocking their data because the port its bound to doesn't allow port-forwarding
View 2 Replies View RelatedUbuntu Security :: Router - Port Forwarding And Network Security
Nov 11, 2010As it stands I have a small home network operating behind my modem/router. Some of the ports on this are forwarded to my PS3 for gaming but I was looking at forward some for my file server.
At the moment I've forwarded port xxx22 to port 22 on my server for SSH for instance. ANd similarly 21 for FTP (although it doesnt seem to want to connect for any more than a few seconds using that). What I was thinking of doing was placing a small website for a handful of ppl to use on the server too and port forward again - xxx80 to 80. It works just fine but I'm a little concerned on the security front.
As I've moved the port to something different from the outside world I'm presuming I will have already cut the potential for malicious folks to wander in but is there anything else I should be doing? At the moment there's no firewall operating on the server, usually as its hidden behind the modem/router. But if I open this thign up more permanently what should I be doing? I've read a few articles on it but I'm always left with the overwhelming thought of "Thats if theres no firewall in my router" as they just seem to do the same.
Ubuntu :: Unblock A Domain In 7.04?
Sep 17, 2010how can i unblock a domain in ubuntu 7.04 ?
View 1 Replies View RelatedUbuntu :: Unblock A Webpage In 10.04?
Aug 4, 2010I inadvertently blocked a web page and get the following message when I try to open it using Firefox.
"The page isn't redirecting properly Firefox has detected that the server is redirecting the request for this address in a way that will never complete. * This problem can sometimes be caused by disabling or refusing to accept cookies."
I can change users and access the web page or change computers. No other websites were affected. Is there a way in Ubuntu or Gnome to unblock a website to accept cookies?
Ubuntu :: Unblock HamSphere On Xubuntu 10.04?
Nov 1, 2010is it possible to unblock HamSphere on xubuntu 10.04?
View 2 Replies View RelatedUbuntu :: How To Unblock Sites Via Terminal
Apr 5, 2011At school we're running edubuntu and some sites are blocked. I've heard that there is way to unblock some sites via terminal. For example facebook is blocked in our school. Is there any way to unblock it via terminal?
View 2 Replies View RelatedUbuntu Security :: How To Disable Usb Port In 9.10
Mar 9, 2010I need disable usb port access in ubuntu9.10. how to disable usb port in ubuntu9.10
View 9 Replies View RelatedUbuntu Security :: Ufw Is Blocking Some Port 80 And Should Not?
Apr 15, 2011I have the default to deny all. The only rule I have in there is:
Code:
To Action From
-- ------ ----
[code]....
Security :: Using Port 40292 On Ubuntu 10.4?
Jun 10, 2010Watching Logs and event reports,clearly something is trying to use my 40292 port.I tried to find out more about the Port, by temporary starting FireStarter.Unfortunately my search kept me stranded with the same question after 3 hours. Does anybody here knows any thing about that certain port usage?
View 5 Replies View RelatedNetworking :: How To Unblock A Word
Jul 21, 2010I have blocked a word tube in squid proxy it is even blocking all the words contain tube like tubercolosis how to unblock a word
View 1 Replies View RelatedServer :: Unblock The Sites?
Jun 18, 2010In my college all popular sites blocked i am working on linux... is it possible to Encrypt the http request? anyother way except proxy sites
View 2 Replies View RelatedUbuntu Security :: Dangers Of Port Forwarding?
Feb 4, 2010Up to now I've been playing with Ubuntu whilst storing important data elsewhere for about 2 years. Now I'm ready to move to Ubuntu completely but want to address my security.I'm currently using a desktop and server behind a hardware firewall / Internet router. The router has DynDNS and forwards port 80 to the webserver and a port I picked at random to the desktop 22 for SSH with private keys. SSH passwords are disabled.
The first question is, is there a danger of running different security levels on the two machines? I don't care about the server, there is no data on it so I currently forward port 80 and am considering forwarding ports 631 (CUPS) and a port for LDAP. Will this effect my desktop (which has info I don't want to loose).The next question is whether port forwarding / hardware firewall is actually a safeguard against attack.
Ubuntu Security :: Tor Open Port 23 For Telnet
Apr 24, 2010Tor open port 23 for telnet. Is this normal ?
View 3 Replies View RelatedUbuntu Security :: SSH Remote Port Forwarding
May 13, 2010I'm trying to SSH into my home computer from a remote location outside of my house's LAN and can't figure out remote port fowarding.
The guide here says to use the following:
Code:
I've tried connecting to my home computer through many combinations of the syntax listed above, read the man file, and looked online for help. But can't find out the proper syntax or a good guide that isn't written for Windows users using Putty.
Let's assume for the sake of simplicity that the public IP address of my home SSH server is 123.123.123.123, the private IP address of my home SSH server is 192.168.1.100, my home SSH port is 2222, and the SSH port at my current location is is 22. How would I write out the command?
Every time I try to connect I get a "connection times out" error.
Ubuntu Security :: Only Allowed To Use One Port For Proxy?
Jun 5, 2010I'm using a local proxy server VPN'd to another network.
How do I setup either Firestarter or Gufw/ufw to ONLY allow in/out from ONE port? (The one port the proxy uses)
Ex: Firefox is proxied to 127.0.0.1, all ports, and then the proxy picks it up, and sends out on port xxxx, and recieves on port xxxx, then sends back thru 127.0.0.1, back to Firefox.
Any setting/rules I've treid on either Firestarter or Gufw kills the proxy>VPN (Proxy won't connect to remote network)
Addendum: If I start the proxy FIRST, then the firewall, all is good. I'm thinking the proxy uses a port to connect with remote network first, then switches to my configured xxxx port...hmmm
Ubuntu Security :: Iptables Port 25 Is Open
Feb 28, 2011I've recently installed 10.10 server edition, and I must say it was a pleasant suprise, it's just the way I like it. I use it as a squeezebox-server. But I've run into a problem with the firewall. I did a portscan, which told me there are more ports open then I've told UFW to open. Among which port 25 and 119, when I telnet from another PC to those ports, the connection gets accepted, although there is no answer to any commands (as expected, there's no mail server running). Iptables print-outs also don't mention anything about the respective ports or a daemon that could be responsable, and the same applies to "ps -e" or "ps aux".
Iptables seems to be working, when I remove the rules to allow samba to work, I can't reach the shares, and when I insert them again I can reach the shares. "sudo ufw deny from any" as last rule doesn't change anything either (deny incoming is default (although I never issued the command "ufw status verbose" says it is) so it shouldn't, but ports 25 and 119 shouldn't be open either).
Ubuntu Security :: Make Port 80 Read-only?
Apr 3, 2011I am running a ubuntu server for home use and am currently hosting a website for testing urposes I am worried because I have to leave my port 80 open for this to work. an Idea I have is to make it that port 80 is read only.
View 9 Replies View RelatedGeneral :: Unblock Facebook From A Computer?
May 29, 2010My husband blocked my computer from facebook. How can I unblock it?
View 2 Replies View RelatedUbuntu Security :: Mystery Process Keeps Using Trying Port 1900
Mar 19, 2010According to firestarter, there's some process on my machine that keeps trying to access port 1900, every two minutes exactly. I don't know what it is. I've tried netstat -tnlp, but it doesn't show up. Presumably I have to do it at the exact second the process is trying to access the port. Does anyone know of a bash subroutine that will keep doing netstat -pl until it finds a process on port 1900?
View 4 Replies View RelatedUbuntu Security :: Unusual Port - 8081 - Is Open?
Jul 3, 2010I did a port scan on my own network and found the following port open on my Ubuntu:
Particularly, I have no idea what/why the following is open: 8081/tcp open blackice-icecap
Ubuntu Security :: Firewall Can Install Only Let Certain MAC Addresses Through On Certain Port?
Jul 25, 2010Is there a firewall I can install that will only let certain MAC addresses through on a certain port?
View 2 Replies View RelatedUbuntu Security :: Iptables Not Allowing Port Forwarding
Sep 5, 2010I've got two virtual machines running, the first VM (VM1) has two network interfaces, one bridged with my real lan, one a private subnet. The second VM (VM2) has one nic, only on the private subnet.
I have VM1 acting as a router for VM2, giving access to my real lan for internet access. The problem I'm having is I cannot get VM1 to forward ports 80 (http) or 222 (ssh) to VM2 from my real lan.
Here is the script I've cobbled together from various (foreshadowing!) locations:
Code:
Ubuntu Security :: Port Fowrarding - Safe / Unsafe?
Sep 8, 2010when I apply port forwarding to my router @ home? Is it a risk to every computer on the network or just specifically the server that is involved?
View 9 Replies View RelatedUbuntu Security :: Iptables, Block Port Except For Eth0
May 24, 2011I would like to allow incoming and outgoing connections when I'm connected to a wired connection, but drop it otherwise. I noticed that ufw can't block outgoing traffic because of will I give iptables a try. I'm unsure if dropping packages that are outgoing will work, the rule after the block rule will allow all outgoing connections.
This what the rules are intended to do, unsure if that is actually the case. Allow all loopback traffic. Allow ping replys Allow incoming on port 12345 if eth0, deny otherwise. Allow outgoing on port 12346 if eth0, deny otherwise.
Code:
iptables -A FORWARD -j DROP
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -p icmp --icmp-type 0 -s -m state --state ESTABLISHED,RELATED -j ACCEPT
[Code]....
Debian :: Avahi Blocks Websites / Unblock Those?
Nov 8, 2010I am using my netbook with Squeeze when I travel. I recently started getting a msg "Network discovery service has been disabled" or something to that effect. And many websites have been blocked as well. I discovered that I could remove avahi-daemon to fix it and I have done so. Unfortunately, the websites are still blocked even though I no longer get the msg. I could not even post this msg here with Linux and had to boot with Windows to do it. It is a shame. Can someone please tell me how to unblock those websites.
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