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I am on Unbuntu 9.04 and am unable to scp files from my computer to a server. On the other hand, I am able to scp files from the server to my computer.
I suspect some ports are blocked on the the Router. If yes, what are they. Else, could there be any...
Started by Bart J on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at superuser):
You should get an SSH header.
I'd say it's unlikely to be a port issue since you can establish the connection, it's more likely if the port is open on the target machine is to simply telnet to the port.
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I was reading a website about the difference between stealthed and closed ports.
http://www.grc.com/faq-shieldsup.htm
A closed port will echo a packet if closed. However, a stealthed port will not respond at all.
Is it recommended to stealth all the ports...
Started by Unknown on
, 8 posts
by 8 people.
Answer Snippets (Read the full thread at serverfault):
Basically, if you don't reply with a packet saying the port is closed, you'll make open ports will still respond to a port scan), makes extra work for you, and breaks the rules of RFC://www.grc.com/faq-shieldsup....
Trying to do.
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I have a problem where a connection to any range of ports to an ip on the LAN and on the Internet while on wireless, shows the ports open then an immediate disconnect, the ports in question are actually closed.
It's a problem similar to this post https...
Started by buggles on
, 1 posts
by 1 people.
Answer Snippets (Read the full thread at dd-wrt):
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The application I'm currently working on requires three ports to be opened. At the moment these are 5024 through 5026 but on reading around I discovered that these lie in the ICANN registered range (i.e. ports < 49151).
Is there any need for me to ...
Started by paulbeesley on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
How....
To have a significant number of clients using those ports in general use; in that case, you would want to try to register the application with the port to prevent potential collisions with other applications using those ports.
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What are some ports that can NEVER be blocked outbound in firewalls, as doing so will stop basic internet use? Some I can think of are: port 53 udp/tcp -- dns, blocking this will prevent users accessing any domain port 80 tcp - http port 443 tcp - https...
Started by David Wu on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at serverfault):
The....
A firewall might allow the standard DNS related ports through only to local DNS servers with more control.
The outbound port or closed.
The ports you referenced are inbound ports on the destination host.
443, etc.
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I am wondering what ports can / should be closed down on a windows webserver 2008. Port 80 of course not, and 3389 not, too, because I need a remote desktop connection.
netstat told me the server is listening on following ports:
TCP 0.0.0.0:80 0.0.0.0...
Started by Max on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at serverfault):
The answer to....
But then this server has no interaction with the outside world .
Be worth your while to close all your ports (aside from 3389 if you only have remote accessThe most secure web server is one with no ports open at all.
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I bought a PS3 a few days ago and wanted to know is it necessary to forward ports on my router for the PS3? I don't know much about PS3 networking so please let me know what information you would need and I'll provide it.
EDIT: What made me wonder was...
Answer Snippets (Read the full thread at superuser):
And this question is probably gonna get closed since.
So no you don't need to open any ports.
It work.
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Hi,
How to hide web server name and openssh version on linux when scanning server ports?
when i nmap'ed( nmap -A -T4 192.168.40.12 ) ip server from the outside, the one shows:
Starting Nmap 4.62 ( http://nmap.org ) at 2009-11-05 14:11 IRST LUA INTERPRETER...
Started by M.Rezaei on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at serverfault):
You can change it by recompiling OpenSSH after modifying the SSH_VERSION #define, or where it is used in sshd.c :
snprintf(buf, sizeof buf, "SSH-%d.%d-%.100s%s", major, minor, SSH_VERSION, newline... .
The sshd version string is not configurable at runtime.
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Hi,
How to hide web server name and openssh version on linux when scanning server ports?
when i nmap'ed( nmap -A -T4 192.168.40.12 ) ip server from the outside, the one shows:
Starting Nmap 4.62 ( http://nmap.org ) at 2009-11-05 14:11 IRST LUA INTERPRETER...
Started by M.Rezaei on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at serverfault):
As for OpenSSH, from the FAQ :
2.14 - Why does OpenSSH report its version to clients?
OpenSSH, like most... .
I don't believe you can hide the server type from NMap, as it's clever enough to detect software type from handshake negotiation, fault handling etc .
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Does the erlang TCP/IP library have some limitations? I've done some searching but can't find any definitive answers.
I have set the ERL_MAX_PORTS environment variable to 12000 and configured Yaws to use unlimited connections.
I've written a simple client...
Started by ckovacs on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
EDIT:
The system call listen() has a parameter backlog which determines how from the open ports section....
Of ports that can be open at the same time is 1024 by default, but can be configured by the environment variable ERL_MAX_PORTS.
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