ipfw slow ssh and ftp connections Post: 71705

9 More Discussions You Might Find Interesting

1. Solaris

Solaris 9 slow login thru ssh & ftp

When I ssh to my box, an Ultra 5. I get prompted for password immediately. I enter it and have to wait sometimes a full minute for it to prompt for a password. The same thing happens when i try to ftp to the box, it will say connected, but it takes forever to prompt for password, and...

2. UNIX for Dummies Questions & Answers

SSH and FTP connect slow

Hi again guys, Earlier today, just all of a sudden, all SSH and FTP connections to my internal Linux box just slowed down to a crawl. After the connection/authentication though, everything was back to normal speed. Until you have to connect again. A box reboot didnt work either. Now, from...

3. AIX

Show number of SSH connections

I'm investigating an issue where rsync's to an AIX server will sometimes fail. I suspect the problem might be due to the number of simultaneous SSH connections being made to the host dropping the rsync attempts. I'd like to view the number of open ssh connections. The who command will list logged...

4. Ubuntu

SSH droping connections over a VPN

Hello friends, I'm connection to an external network using a VPN configured over an Ubuntu. The problem is that whenever I get connected to a remote computer using my VPN as router, after a while, sometimes short, sometimes long, sometimes immediately, the connection gets lost and I've to...

5. Programming

FTP - reusing data connections

Hi there, This may be a stupid question, but... Is it possible to use one data connection channel initiated on a FTP server for sending multiple commands (LIST, NLST, MLSD)? Thanks in advance!

6. UNIX for Advanced & Expert Users

Disallow new ssh connections for a while ?

Hello, What is the best way to disallow new ssh connections for the duration of my session ? I want to evade read/write collisions. Things work like that - one session put files on server, other copies these files and then deletes them. So in order to evade collision: - I check if there are...

7. UNIX for Dummies Questions & Answers

Need to know if there are ftp connections in my machine

Hello, I need to know if there are ftp connections in my machine. How can I find out that?any commands to use? PS: i know how to find which users are on my machine now by using #who -r regards

8. AIX

How to list the current ftp connections?

Hello, I need to know How to list the ""current"" ftp connections? the machine is AIX 6.1 Regards Ahmed Amer Cairo,Egypt

9. Shell Programming and Scripting

Help, SSH /ipfw block script

Hello, This is an SSH Block hammer script using ipfw, that I have modified for my own use. It is for a freenas 7.2 box which is FreeBSD based. The script works, but if there is more then one hammer attack per day, my issue is the script reads the first five instances of refused or invalid...

LEARN ABOUT DEBIAN

ipfilter.conf

NETSCRIPT-2.2.conf(5)						File Formats Manual					     NETSCRIPT-2.2.conf(5)

NAME

       /etc/netscript/network.conf - interface, firewalling, and QoS configuration file.

       /etc/netscript/if.conf - interface setup shell script file

       /etc/netscript/qos.conf - QoS setup shell script file

       /etc/netscript/ipfilter.conf - IP chains filtering shell script file

       /etc/netscript/srvfilter.conf - server IP filter shell script file

DESCRIPTION

       This manpage is a place holder until something better is written when the netscript itself has stopped changing rapidly.

       Please  see  the README file in the /etc/netscript directory, and READ the configuration files if you need to change them.  Apart from net-
       work.conf, all of them contain sh (1) shell script functions which are there so that various things can be altered  or  hooked  in  at  the
       right place. Network.conf contains the full network setup details, including special interface setup for the likes of ciped/pppd/wanconfig,
       and is fully commented with examples given.

UPGRADE PATH FROM KERNEL 2.2.X
       The firewall/IP filtering stuff in ipfilter.conf is the part that changed radically with the move to iptables and a far better way of  set-
       ting  up  the  IP filtering rules, however the QoS and interface startup/shutdown in if.conf have changed but are backwards compatible with
       the old 2.2.x ipchains version of netscript for the interface address configuration settings.  You will have to set up the filtering  again
       to use iptables by directly using the iptables commands.

       Also,  the  kernel  2.2.x version scripts are set up so that iptables is only run on a 2.4.x kernel, otherwise IP forwarding is disabled if
       beforehand you set IPFWDING_KERNEL to FILTER_ON in network.conf.

       This means that when you upgrade a box to a 2.4.x router kernel, you should then be able to reboot it and log  into  remotely  and  upgrade
       netscript  to  the version that will support 2.4.x.  In this situation, if you have set old IPFWDING_KERNEL setting to FILTER_ON beforehand
       in network.conf, all IP forwarding through the box will also be disabled.  This means that you can safely remotely upgrade a firewall.

SEE ALSO

       netscript(8), ipchains(8), iproute(8), brcfg(8).

AUTHOR

       This manual page was written by Matthew Grant <grantma@anathoth.gen.nz>, for the Debian GNU/Linux system (but may be used by others).

BUGS

       The author is lazy.  He needs to write btter man pages...

								 November 23, 2000					     NETSCRIPT-2.2.conf(5)