Sponsored Content
Special Forums IP Networking Question about blocking incomming traffic Post 302865449 by LMHmedchem on Friday 18th of October 2013 12:27:27 PM
Old 10-18-2013
Thank you for this very informative post. This is what I was looking for. If I read this right, my router will automatically block incoming connections unless I have set up port forwarding to allow it. Further, unless I am running the service that the connection is looking for, the connection would be refused anyway.

I have been to shields up and this system passes all of their tests there, other than the IP of my router being visible. This is the message that I get, "Your system has achieved a perfect "TruStealth" rating. Not a single packet, solicited or otherwise, was received from your system as a result of our security probing tests." I guess that should provide me some peace of mind.

Is there any way for there to be intrusion on port 80, since that will be used for normal internet traffic?

LMHmedchem
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Incomming EmailAttachments

Hello, I have a requirement to accept incoming email attachements on my server to be saved off and processed into a database. I can find lots of information on sending attachments but nothing about handling incomming attachments. I need to be able to test for an attachment, ensure it's ascii and... (1 Reply)
Discussion started by: grhodes
1 Replies

2. IP Networking

blocking DHCP

I've got a legit DHCP server on my network. I've got a 3550 as my VTP server providing 4 vlans to 4 2950 switches. If somebody were to plug into one of those vlans with a DHCP server configured then it would throw off my whole network. How could i block the DHCP server that could plug into the... (2 Replies)
Discussion started by: byblyk
2 Replies

3. Linux

how to configure Linux for incomming connections

I have two computers running red hat, but when i use telnet command in a shell from one to another, it works. but from the other , it does not, it said: refused. i sent the security for incoming connecting, but it still not work . anyone have experience ? thanks vh (1 Reply)
Discussion started by: new23
1 Replies

4. IP Networking

Mac OS X IP traffic shaping question

Not sure if this considered traffic shaping or not, so I'll appreciate the enlightenment... Setup- Mac Pro, Mac OS X 10.5.6, Crashplan Pro Backup server. the Mac Pro has 2 E-net ports, en0, en1. Both E-net ports are connected to the same network, different IP's. Problem- We are planning to... (1 Reply)
Discussion started by: pbenware
1 Replies

5. UNIX for Dummies Questions & Answers

NIC card monitoring traffic question

Folks; I have 2 NIC cards on my SUSE Linux server. One of them was reporting receive errors for a while now it's OK, but i'd like to monitor it. Is there any command i can run to tell me the usage in the past or give me a history of traffic and the speed that going on this specific card? I... (1 Reply)
Discussion started by: Katkota
1 Replies

6. UNIX for Advanced & Expert Users

ps blocking

Hi Folks I have been debugging a script that is called every thirty seconds. Basically it is doing a ps, well two actually, one to file (read by the getline below) and the other into a pipe. The one into the pipe is: - V_SYSVPS=/usr/sysv/bin/ps $V_SYSVPS -p$PIDLIST -o$PSARGS... (0 Replies)
Discussion started by: steadyonabix
0 Replies

7. UNIX for Dummies Questions & Answers

Blocking signals

I know how to add signal to a set. But what if I want to add 2 or 3 signals to the set. I know I can use sigaddset (&set,SIGBUS)....but what if I want to add SIGBUS and SIGALRM at once. Do i have to do it like this.. sigaddset (&set,SIGBUS); sigaddset (&set,SIGALRM); Is there another way to... (0 Replies)
Discussion started by: joker40
0 Replies

8. Solaris

Solaris Question - How to find outgoing traffic on UDP ports

Hello All, I am trying find a command that would show me the stats of outgoing traffic on UPD ports on a Solaris 10 box. I would appreciate if anybody could help me out on this. Thank you much!!! Best Regards Sudharma. (7 Replies)
Discussion started by: sudharma
7 Replies

9. IP Networking

blocking traffic to destination network by port

I am trying to block ALL traffic except when from ports 9100,22,23 to destination network 192.0.0.0 (my WAN): 2 networks 192.0.3.0 with static route to 192.0.0.0 Shouldn't this work?: iptables -A INPUT -p tcp -d 192.0.0.0/24 --dport 22 -j ACCEPT iptables -A INPUT -p tcp -d 192.0.0.0/24... (3 Replies)
Discussion started by: herot
3 Replies

10. Programming

Which are blocking and non-blocking api's in sockets in C ?

among the below socket programming api's, please let me know which are blocking and non-blocking. socket accept bind listen write read close (2 Replies)
Discussion started by: VSSajjan
2 Replies
REDIR(1)						      General Commands Manual							  REDIR(1)

NAME
redir - redirect tcp connections SYNOPSIS
redir [--laddr=incoming.ip.address] [--caddr=host] [--debug] [--syslog] [--name=str] [--timeout=n] [--bind_addr=my.other.ip.address] [--ftp=type] [--transproxy] [--connect=host:port] --lport=port --cport=port [--bufsize=n] [--max_bandwidth=n] [--random_wait=n] [--wait_in_out=n] redir --inetd [--caddr=host] [--debug] [--syslog] [--name=str] [--timeout=n] [--ftp=type] [--transproxy] [--connect=host:port] --cport=port [--bufsize=n] [--max_bandwidth=n] [--random_wait=n] [--wait_in_out=n] DESCRIPTION
Redir redirects tcp connections coming in to a local port to a specified address/port combination. It may be run either from inetd or as a standalone daemon. Depending on how redir was compiled, not all options may be available. OPTIONS
--lport Specifies port to listen for connections on (when not running from inetd) --laddr IP address to bind to when listening for connections (when not running from inetd) --cport Specifies port to connect to. --caddr Specifies remote host to connect to. (localhost if omitted) --inetd Run as a process started from inetd, with the connection passed as stdin and stdout on startup. --debug Write debug output to stderr or syslog. --name Specify program name to be used for TCP wrapper checks and syslog logging. --timeout Timeout and close the connection after n seconds of inactivity. --syslog Log information to syslog. --bind_addr Forces redir to pick a specific address/interface to bind to when it listens for incoming connections. --ftp When using redir for an FTP server, this will cause redir to also redirect ftp connections. Type should be specified as either "port", "pasv", or "both", to specify what type of FTP connection to handle. Note that --transproxy often makes one or the other (generally port) undesirable. --transproxy On a linux system with transparent proxying enabled, causes redir to make connections appear as if they had come from their true origin. (see /usr/share/doc/redir/transproxy.txt) --connect Redirects connections through an HTTP proxy which supports the CONNECT command. Specify the address and port of the proxy using --caddr and --cport. --connect requires the hostname and port which the HTTP proxy will be asked to connect to. --bufsize n Set the bufsize (defaut 4096) in bytes. Can be used combined with --max_bandwidth or --random_wait to simulate a slow con- nection. --max_bandwidth n Reduce the bandwidth to be no more than n bits/sec. The algorithme is basic, the goal is to simulate a slow connection, so there is no pic acceptance. --random_wait n Wait between 0 and 2 x n milliseconds before each "packet". A "packet" is a bloc of data read in one time by redir. A "packet" size is always less than the bufsize (see also --bufsize). --wait_in_out n Apply --max_bandwidth and --random_wait for input if n=1, output if n=2 and both if n=3. SEE ALSO
inetd(1) local REDIR(1)
All times are GMT -4. The time now is 12:35 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy