I scanned my home machine (windows vista) with Nmap, after disabling the firewall and all ports came back with the status as unknown (No Open Ports). Why no ports are showing as open?
View 3 RepliesI am trying to understand why when running nmap against a SonicWALL firewall at a remote location, the SonicWall firewall is saying that most of its 65535 ports are open? I know this cant be correct and remember reading about how some of these network appliances are setup this way to thwart off attacks.
View 7 Replies View RelatedI have ordered a server with OS:
Ubuntu Server 11.04
After a quick nmap scan I found out a few open ports. What is using these ports?
1102/tcp filtered adobeserver-1
1201/tcp open nucleus-sand
I'm encountering a strange problem. I need to open and forward all UDP and TCP ports related to VoIPtelephony (5000:32000) in the Suse 11.1 server that's acting as router/firewall in our setup. The ports must redirect to a Asterisk server in the local network. (This server has the IP adress 192.168.0.3)I've opened ports in Yast (Firewall>Ports>Advanced) and putted in some masquerading rulesirewall>Masquerading):0/0,192.168.0.3,tcp,5000:31000,5000:310000/0,192.168.0.3,udp,5000:31000,5000:31000when I do a nmap localhost I get:Starting Nmap 4.75 at 2010-01-08 16:52 CETInteresting ports on localhost (127.0.0.1):
Not shown: 991 closed ports
PORT STATE SERVICE
21/tcp open ftp
[code]....
I want to identify all the computers on my LAN that have port 80 open. So I want to scan an IP range (192.168.0-255.0-255) and have Nmap print onto the screen all the IPaddresses it scanned that are accepting connections on port 80. How do I do this?
View 1 Replies View RelatedI'm not too sure if this is the right topic to post in but if it isn't please move it to the correct topic. I recently opened some ports for my Playstation 3 and the connection test on the PS3 tells me that the ports are open . But when I execute this command
nmap -p 0-60000 192.168.1.5 I get this
Quote:
Starting Nmap 5.21 ( http://nmap.org ) at 2010-10-16 20:54 AUS Eastern Daylight
Time Nmap scan report for PS3 (192.168.1.5)
Host is up (0.00063s latency).
All 60001 scanned ports on PS3 (192.168.1.5) are closed
MAC Address: **:**:**:**:**:** (Sony Computer Entertainment)
Nmap done: 1 IP address (1 host up) scanned in 4.12 seconds
I could be executing the wrong command or something but I have read through the manual and couldn't find anything that helped. I have tried this command on other machines that I have opened ports for and get similar results except for a few Ephemeral ports (80,443 etc.) which also makes me wonder why these aren't listed as open on the PS3?
I am new to Linux. I am installing oracle OBIEE 11g on Linux Red Hat 5.6 64 bits and I got stuck at ports not open error.
I tried adding the following line in the iptables file:
Then Restart iptables service, But did not have any success still getting the same error.
How do I open ports on my server.
I cant get any of my usb ports to open ,m trying to open my "usb external hard drive .
View 2 Replies View RelatedWhat UNIX command do you use to find out the open ports in a system?
View 1 Replies View RelatedHow to list Open ports on Linux?
View 3 Replies View RelatedStrange issue here when trying to verify firewall on Server 8.04. No ftp service running at all on server, but both nmap and netcat report port 21 as being open, even though it isn't.I am 100% sure that port 21 is not actually accessible and iptables rules are fine. Trying to connect to the port fails, yet nmap and netcat seem to report a "false positive"?Have also checked on a number of other servers I'm running, and this "false positive" seems to apply to all of them.
View 1 Replies View RelatedI would like to ask today how to open up specific ports in Linux firewall (iptables). Recently I have changed the SSH port in server from 22 to 30022 by typing
Code:
# vi /etc/ssh/sshd_config
Code:
Port 30022
"/etc/ssh/sshd_config" 111L, 3027C
And then for the iptables configuration file:
Code:
# vi /etc/sysconfig/iptables
[code]....
How to configure the iptables properly so that my Windows PC can access the Linux with port 30022?
The toolbar is completely empty and when I run apps or open windows, the icons do not show up. The weird thing is when I select 'Panel Properties' and UNSELECT 'expand', then it shows up. But then my toolbar shrinks and doesnt go 100% in width.
View 1 Replies View RelatedJust did a check on "shields up" and it says that ten of my ports are open. I get the same result with or without both shorewall and firestarter. I suspect it may have something to do with the mysql server packages added automatically during installation. Am I right. If so, what can be done about it? If not, has anyone any idea how to keep my ports closed?
View 5 Replies View RelatedI'm trying to setup oracle10g but, whenever I try to go to my database homepage http://127.0.0.1:8080/apex I get an "unable to connect to" error. Only reason I can think of as to why I can't connect to it is because my ports aren't open. I also recall SELinux complaining about something awhile ago, I can't seem to bring that up any more for some reason.
View 1 Replies View RelatedI've been struggling for days trying to open port 53 and 25 but can't get it to work. My iptables at /etc/sysconfig contains the following:
# Firewall configuration written by system-config-firewall
# Manual customization of this file is not recommended.
*filter
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0] .....
On the server machine when I do port scan with nmap I see the following result:
Starting Nmap 4.76 [URL] at 2010-03-28 01:03 CET
Warning: Hostname localhost resolves to 2 IPs. Using 127.0.0.1.
Interesting ports on localhost (127.0.0.1):
Not shown: 986 closed ports .....
But when I try to do telnet from an external machine, e.g:
telnet <IP of host> 53
I get:
Connection refused
telnet: Unable to connect to remote host
I also did a port scan with a tool on an external machine but port 53 and 25 weren't listed as opened ports. Also CheckDNS.net on the server returns "Connection reset. Probably DNS server is offline". I am 100% sure that named and sendmail are running. When I do a ps -aux I see:
named 9261 0.0 0.3 85528 14784 ? Ssl 00:46 0:00 /usr/sbin/named -u named
root 2550 0.0 0.0 9536 1960 ? Ss Mar23 0:02 sendmail: accepting connections
how can i close all of ports and open ssh only?
View 6 Replies View RelatedA few months ago I installed Ubuntu 9.10 on my girlfriends laptop, on her request, as she didn't like Windows any more. Since then the internet connection periodically slows down due to too many open ports/connections. Always when this happens I call our ISP and usually there are around 80-200(!) active connections to various IP's.
She is not downloading torrents or anything.
She only uses Firefox and a few open tabs as people do.
Skype is open.
Wireless internet connection.
I am thinking either Ubuntu is updating more or less constantly or the ports/connections aren't closed "after use".
I'm locking down my laptop. I know I can use a firewall to ensure nothing gets through that I didn't catch, and I certainly plan on using one, but in the meantime, I want to know what exactly is running on my system.
nmap localhost returns:
Code:
james@james-linux:~$ nmap localhost
Starting Nmap 5.00 ( http://nmap.org ) at 2010-07-26 23:33 CDT
Warning: Hostname localhost resolves to 2 IPs. Using 127.0.0.1.
Interesting ports on localhost (127.0.0.1):
Not shown: 994 closed ports
PORT STATE SERVICE
25/tcp open smtp
111/tcp open rpcbind
139/tcp open netbios-ssn
445/tcp open microsoft-ds
631/tcp open ipp
2049/tcp open nfs
Nmap done: 1 IP address (1 host up) scanned in 0.18 seconds
However, I know that localhost goes back to the loopback interface, 127.0.0.1. So, to see what was really open, I ran nmap 192.168.0.108, which is my laptop's IP at the moment.
Code:
james@james-linux:~$ nmap 192.168.0.108
Starting Nmap 5.00 ( http://nmap.org ) at 2010-07-26 23:33 CDT
Interesting ports on 192.168.0.108:
Not shown: 996 closed ports
PORT STATE SERVICE
111/tcp open rpcbind
139/tcp open netbios-ssn
445/tcp open microsoft-ds
2049/tcp open nfs
Nmap done: 1 IP address (1 host up) scanned in 0.14 seconds
Now if I understand correctly, I can attribute 139 and 445 to my Samba share. That I'm okay with. What I don't know is 111 and 2049. Does anyone know what these ports are, what's running on them, and how I could turn them off, supposing that they are a security risk?
I'm getting heat from the head networking office that ports 21, 110, and 143 are open. I can telnet to those ports from a remote machine (not localhost) and get a prompt. There does not seem to be anything listening on those ports according to netstat. I've tried using iptables to discard all traffic to a from those ports but I can still telnet to them. This is a lucid desktop machine.
View 4 Replies View RelatedI'm trying to open my ports all the way, but for some reason, I am unable to do so. I've forwarded the ports I want open in my router (I switched between two routers to make sure), I made exceptions in Firestarter, and I even added UFW rules, but when I use pretty much any and every port checking tool out there, the ports eithere back stealthed or closed.I'm not a complete noob, and I'm not an expert, but I'm p sure I'm doing everything right, seeing as there isn't much to screw up.The reason I'm trying to fully open these ports is because I'm getting this dumb 'No Incoming Connections
View 3 Replies View RelatedI'm using ubuntu-linux ( ubuntu 9.10)I use utility autoscan network to scan the systems available in local area network of my hostel.It shows my open TCP ports : like Ssh , Smtp , Http , NetBios-ssn , Microsoft-ds , ipp , Mysql , Postgres.Are all these services need to run all the time or I can manage the ports.Don't know much about it just want to know these ports are by default open or I can manage them.
View 7 Replies View RelatedSince there was no response on my other post which i spent about a hour writing, ill go for something simpler. I run this on my server
Code:
# set default policy for the NAT table
iptables -t nat -P PREROUTING ACCEPT
[code]...
I would like to open some port from IN to OUT pop3,smtp.whenever i tried to add some rules to existing iptables it gives me an error.Applying iptables firewall rules: iptables-restore: line 21 failed
View 7 Replies View Relatedi have old version for nmap:root@bt:~# nmap --version nmap version 5.35DC1 ( http://nmap.org ) i download new version, but before i install it, is there a way to upgrade the old one on my system? or need to un-install the old version and install the new version? i tried this:
root@bt:~# yum upgrade nmap
Setting up Upgrade Process
Could not find update match for nmap
No Packages marked for Update
root@bt:~#
Wondering how to use awk to take nmap's output "Discovered open port 23/tcp on 192.168.0.4" and create a output of "192.168.0.4:23"?
View 9 Replies View RelatedI have installed Debian Jessie (<-- brilliant OS ) on my uncles Laptop (it is a Thinkpad E540) with Cinnamon as desktop environment. The installation was no problem. Everything apart from one minor thing works nicely. The minor thing however is the following:
I don't know what it is, but when I don't use a particular usb port for a while and then try to plug in a usb stick or a wacom tablet, it doesn't get recognized, it doesn't show up when I use f.e. Code: Select alllsusb. When I close the lid of the laptop and open it again, then the particular usb device gets recognized and cinnamon asks me what to do, f.e. open a folder and show the content of the usb stick I have plugged in. Because of the success on two other laptops I use the following
Code: Select all# /etc/systemd/system/powertop.service
[Unit]
Description=Powertop tunings
[Service]
Type=oneshot
RemainAfterExit=no
ExecStart=/usr/sbin/powertop --auto-tune
Environment="TERM=xterm"
[Install]
WantedBy=multi-user.target
to save power on the Thinkpad (this is in no way my service script, I tuned everything using powertop in the terminal after having had logged in, the script above stems from a brilliant user here on the forum). Could it therefore be autosuspend that is not working properly here?
I have just switched over from firestart to gufw.I have set all incoming traffic to deny and all outgoing traffic to allow.I have rules set for incoming traffic, and have only opened 1 port on my system for torrents. My router also only has the same port opened which again is for torrents.I use "Network Tools" which is included on squeeze and do a portscan of 192.168.1.100 and 127.0.0.1 I get all kinds of crazy ports coming back as opened. What is even stranger is if I do a few scans, these ports change, so one port on one scan may come up as open, then it will disappear and a different port may show as open.
Mind you none but the torrent port is forwarded in my router, I have no idea what any of these other ports are, or why they are even showing up.What the heck is going on? I dont think this is normal? Am I at any higher risk for attack?
how to open firewall ports without using yast. The reason I'm asking is because I'm working on a .sh script for the installation of a couple of programs. Some ports need to be open for the programs to work, I find it really annoying to go to yast and type the ports manually every time. I've looked at /etc/sysconfig/SuSEfirewall2 but can't seem to find anything, I also know that after the changes I will have to stop start the firewall by running:
SuSEfirewall2 stop
SuSEfirewall2 start
Does Ubuntu come with a firewall preinstalled and running? I need to open port 9997 - how would I got about doing this?
View 2 Replies View Related