Here's the problem: Some email-service providers (like
Google) have more than one server and distribute the load such that, e.g. the incoming mail server imap.gmail.com is assigned to more than one IP-address.
With stateful rules, the ipfw firewall correctly allows outgoing packages to one of... (1 Reply)
Suppose i have a txt file that is the list of the addresses,something like:
lala0045 john james
lala0234 george james
and i want to send an email to lala0045@blabla.com and lala0234@blabla.com,the same domain...what is the exact syntax i should use in my script?
there is a command... (10 Replies)
Hi, I need script that will allow me to connect to multiple clients using ssh on Ubuntu terminal...
I have a txt file with the ip addresses of clients, i need a script that will connect to everyone one by one and send some commands...
The idea is to check some settings on every client... (2 Replies)
Hi,
If I want my script to send a mail to multiple recipients I can do the following:
if
then
echo $err_string1 | mailx -s "UAT CPU ALERT" 1@email.com
echo $err_string1 | mailx -s "UAT CPU ALERT" 2@email.com
fi
Can this also be done something like:
... (1 Reply)
Hi, I'm trying to write a script that will check multiple files in a directory (all the relevant filenames begin "TT04.NOTES") for e-mail addresses, and then print these addresses to screen with a count at the bottom. I'm a bit of a novice with Perl but thought it would be the best tool for the... (2 Replies)
Hi,
Apologies if this is the wrong forum or this question has been answered already.
I'm using the ISC dhcpd server on Centos 6.0, and can happily assign a single IPV6 address to a client with entries like this:
subnet6 fd01:0:0:5::/64
{
option dhcp6.name-servers fd01:0:0:5::226;... (0 Replies)
Hi,
We have a router and devices for testing. We route devices with below command
iptables -t nat -A PREROUTING -p tcp -d 0/0 --dport 80 -s 10.111.111.22 -j DNAT --to-destination 10.13.0.16:3128
where 10.111.111.22 is device IP. and 10.13.0.16 is our Linux box machine.
Likewise we... (4 Replies)
Hello
Is there an easy way to login to various ip's..one after the other. I need to login to about 30 aix boxes and put a file in each one...
Cheers (1 Reply)
Hello
Is there an easy way to login to various ip's..one after the other. I need to login to about 30 aix boxes and put a file in each one...
Cheers (1 Reply)
Hello Friends,
I am running Sendmail 8.14 on rhel6. I have one simple question regarding domain masquerading, i would want to masquerade different domains with different addresses. By that what i mean is that lets say i have 3 domains as home.com, example.com, test.com and i would want to... (0 Replies)
Discussion started by: Rohit Bhanot
0 Replies
LEARN ABOUT FREEBSD
tcpdrop
TCPDROP(8) BSD System Manager's Manual TCPDROP(8)NAME
tcpdrop -- drop TCP connections
SYNOPSIS
tcpdrop local-address local-port foreign-address foreign-port
tcpdrop [-l] -a
DESCRIPTION
The tcpdrop command may be used to drop TCP connections from the command line.
If -a is specified then tcpdrop will attempt to drop all active connections. The -l flag may be given to list the tcpdrop invocation to drop
all active connections one at a time.
If -a is not specified then only the connection between the given local address local-address, port local-port, and the foreign address
foreign-address, port foreign-port, will be dropped.
Addresses and ports may be specified by name or numeric value. Both IPv4 and IPv6 address formats are supported.
The addresses and ports may be separated by periods or colons instead of spaces.
EXIT STATUS
The tcpdrop utility exits 0 on success, and >0 if an error occurs.
EXAMPLES
If a connection to httpd(8) is causing congestion on a network link, one can drop the TCP session in charge:
# sockstat -c | grep httpd
www httpd 16525 3 tcp4
192.168.5.41:80 192.168.5.1:26747
The following command will drop the connection:
# tcpdrop 192.168.5.41 80 192.168.5.1 26747
The following command will drop all connections but those to or from port 22, the port used by sshd(8):
# tcpdrop -l -a | grep -vw 22 | sh
SEE ALSO netstat(1), sockstat(1)AUTHORS
Markus Friedl <markus@openbsd.org>
Juli Mallett <jmallett@FreeBSD.org>
BSD January 30, 2013 BSD