SIOCADDRT Error And Two Gateway For Same Destination When I Use Pptp?

Hi all

I am helping fixing a set of old suse VMs and there is something seriously weird going with the networking.

My netstat -nr shows one set of routing commands and the yast/networking shows another set routes, routes that I know doesn't exist on our network.

Has anyone seen this before?

For example, in the attached screenshot, we can see yast shows I have no routes.
But here is the netstat -nr output:

hostname:~ # route
Kernel IP routing table
Destination Gateway Genmask Flags Metric Ref Use Iface
192.168.224.0 * 255.255.255.0 U 0 0 0 eth10
192.168.226.0 * 255.255.255.0 U 0 0 0 eth11
192.168.110.0 * 255.255.254.0 U 0 0 0 eth12
link-local * 255.255.0.0 U 0 0 0 eth10
loopback * 255.0.0.0 U 0 0 0 lo
default 192.168.110.1 0.0.0.0 UG 0 0 0 eth12

Thanks

System Info:

I have normal user in CentOS 7 whose name is "mostafa" (the name of the account).

I naturally have another user called root with all privileges. User "mostafa" is put into sudoers file, too.

The OS is installed in VmWare, so the system is all mine.

Problem:

Now I create a file with touch file.sh and put a command in it, but when I want to run it with Code:

sudo ./file.sh

, an error is shown that the command Code:

./file.sh

does not exist. But if I Code:

 sudo chmod 777 ./file.sh

then it gets run. My question is that, why should I use Code:

chmod 777

when I myself have created the file, and I am in sudoers.

Can anyone explain me why shuold I still use Code:

sudo chmod 777

when the creator of the file is me.

Hello, I have an expect script where I ssh to a remote host to determine the network configuration and get from the user the network interface card that should be used. From their response, I determine the subnet mask and save the information to a text file that is later transmitted back to my local host. This is all so that I can set up virtual IP aliasing and verify that the physical IP address of the local and remote host are on the same subnet prior to continuing with the setup. I am running the script on Linux, with expect version 5.45.

The code itelf works just fine, but I'm having some issues with how it displays on the screen. As you'll see below in the example, the default system prompt displays, as does the user input command that I'm sending to the shell from the expect script.

Is there a regular expression or something that I can write to prevent the prompt and command that I'm sending from printing to the screen? I know that it should be suppressed if I have an expect command following the Code:

send -s "\nread n_card?'Enter the network interface card number for this server (i.e. eth0):   '\r

command, but everything I have tried for strings and regular expressions to expect causes the netstat -rn output to not show up all of a sudden. I'm new to expect, so I'm not really sure why this is happening.

I would really appreciate any help/suggestions. Thanks for your time!

Part of the Script Code:
Code:

expect {
   -re $prompt {   ;# Send individual commands and get user input
        set timeout -1
        
        # Get partner hostname and put in vipsetup.txt file
        send -s "hostname > vipsetup.txt\r"  
        expect -re $prompt
        
        # Display the network routing info for the user and prompt for 
        # network interface card number
        send -s "print \"The network routing table for the $ptner server is displayed below:\n\" ; netstat -rn \r"
        
        expect -re "\r(.*):\r"
        send -s "\nread n_card?'Enter the network interface card number for this server (i.e. eth0):   '\r"
        interact "\r" return    ;# Wait for user input from read command
        send -- "\r"
        send -s "echo \$n_card >> vipsetup.txt\r"  
        
        # Obtain subnet mask information for partner based on network 
        # interface card number being used
        send -s "msk=\$(cat /etc/sysconfig/network-scripts/ifcfg-\$n_card | grep NETMASK)\r"
        send -s "msk=\$(echo \${msk#NETMASK=})\r"
        send -s "echo \$msk >> vipsetup.txt\r"
    }
    timeout {
        send_user "Connection to host $hostip timed out."
        exit 6 
    }
    eof {
        send_user "Connection to host $hostip failed."
        exit
    }
}

Script Output:
Code:

The network routing table for the PRIMARY server is displayed below:
 
Kernel IP routing table
Destination     Gateway         Genmask         Flags   MSS Window  irtt Iface
10.105.65.0     0.0.0.0         255.255.255.0   U         0 0          0 eth0
0.0.0.0         10.105.65.1     0.0.0.0         UG        0 0          0 eth0
 [root@remotehost root]$
[root@remotehost root]$ ber for this server (i.e. eth0):   '              < 
Enter the network interface card number for this server (i.e. eth0):   eth0

Hi,

I tried to configure my ethernet interface on a Debian Wheezy VM, but I've a problem. When I try to restart /etc/init.d/networking, I've no error message.
But my eth1 interface isn't up and when I try to up it with : ifup eth1, it return me :

Code:

root@debian-main:/# ifup eth1
RTNETLINK answers: File exists
Failed to bring up eth1

My /etc/network/interface file is :

Code:

auto eth0
allow-hotplug eth0
iface eth0 inet dhcp


iface eth1 inet static
        address 192.168.10.1
        netmask 255.255.255.0
        gateway 192.168.10.254

Eth0 is my internet interface and eth1 is a local interface. I want to install a DNS and a DHCP server on eth1 to be able to connect client with this VM and give them an ip adress.

Thanks guys

I have CentOS 7 64 bit. I have installed open-vm-tools on it.
I have installed vmplayer using
Code:

./VMware-Player-6.0.1-1379776.x86_64.bundle

Now when I try to open vmplayer on it, it does not load 'Virtual Network Device'
and shows error in terminal
Code:

Failed to build vmnet.  Failed to execute the build command.

When I check status of vmware, it shows
Code:

Module vmnet not loaded

If I try to run
Code:

vmware-modconfig --console --install-all

It gives me following error.
Code:

make: Leaving directory `/tmp/modconfig-2NfFeS/vmnet-only'
Unable to install all modules.

I am not able to open VMplayer, please help me to open it.

Thanks

--Kind Regards
Sam

I have been using this command a lot lately:
Code:

sudo cp -r *.*  /<dest folder owned by root>

Goal: to copy all contents of current folder into destination folder.

I know there are other ways, and have tried several, but gave up in confusion (was also in a hurry to get on with it). Finally gave the windows *.* a shot, and it did exactly what I wanted.

Now that my task is completed, it would be nice to know what *.* literally means in Linux. I just looked though man cp, and also ran Code:

info coreutils 'cp invocation'

but didn't see any '*' options listed. Now I remember having come across '.' before somewhere, in the cp command, so possibly the '*' are ignored, and the only thing that matters is the 'dot'?

Hi Friends,

I have migrated from RHEL-5.9 to RHEL-6.5 on my server. But iptables rules are not working in RHEL-6.5 as it is working with RHEL-5.9 with the same rules. Please check my rules and details are below.

eth1 for incoming traffic
ppp0,ppp1,ppp2 and ppp3 are DSL connection and it using for outgoing traffic.

I am able to send the traffic through each line separately but could not load-balance with all ppp interfaces through iptables.

I am using iptable mangle rules to distribute the traffic.

/sbin/iptables -t mangle -A OUTPUT -p tcp -m statistic --mode nth --every 4 --packet 0 -m tcp --tcp-flags FIN,SYN,ACK SYN -j MARK --set-mark 1
/sbin/iptables -t mangle -A OUTPUT -p tcp -m statistic --mode nth --every 4 --packet 1 -m tcp --tcp-flags FIN,SYN,ACK SYN -j MARK --set-mark 2
/sbin/iptables -t mangle -A OUTPUT -p tcp -m statistic --mode nth --every 4 --packet 2 -m tcp --tcp-flags FIN,SYN,ACK SYN -j MARK --set-mark 3
/sbin/iptables -t mangle -A OUTPUT -p tcp -m statistic --mode nth --every 4 -m tcp --tcp-flags FIN,SYN,ACK SYN -j MARK --set-mark 4

/sbin/ip route add table ppp0 default dev ppp0
/sbin/ip route add table ppp1 default dev ppp1
/sbin/ip route add table ppp2 default dev ppp2
/sbin/ip route add table ppp3 default dev ppp3

/sbin/ip rule add fwmark 1 pref 200 table ppp1
/sbin/ip rule add fwmark 2 pref 200 table ppp2
/sbin/ip rule add fwmark 3 pref 200 table ppp3
/sbin/ip rule add fwmark 4 pref 200 table ppp0

/sbin/iptables -t nat -A POSTROUTING -o ppp0 -j MASQUERADE
/sbin/iptables -t nat -A POSTROUTING -o ppp1 -j MASQUERADE
/sbin/iptables -t nat -A POSTROUTING -o ppp2 -j MASQUERADE
/sbin/iptables -t nat -A POSTROUTING -o ppp3 -j MASQUERADE

/sbin/ip route app default equalize nexthop dev ppp0 nexthop dev ppp1 nexthop dev ppp2 nexthop dev ppp3

It was not working completely and after read some article to change the kernel parameter I am able to send the traffic but it is working only for some time and dropping connections without any errors.

"echo 2 > /proc/sys/net/ipv4/conf/default/rp_filter
"echo 2 > /proc/sys/net/ipv4/conf/all/rp_filter"
"net.ipv4.conf.default.rp_filter = 2"

The same rules were working perfectly in RHEL-5.9. Do i need to change any other kernel parameter get this done?

Please let me know what are the kernel parameters have to be changed to get this working as like RHEL-5.9 ?

Thanks,
Sekar

Hi experts,

so the steps to install kvm is this:

Code:

sudo apt-get install qemu-kvm libvirt-bin bridge-utils virt-manager

according to this webpage: http://www.howtogeek.com/117635/how-...nes-on-ubuntu/

Can I make this simpler?

I want to do just one command: sudo apt-get install kvm, and it should call and install all these packages.

Thanks

Don't suppose someone can tell me exactly what to write in order to download and install PMS on Arch? I'm about to throw my computer out of the window.

First I tried:

Code:

sudo pacman -S plex-media-server-plexpass

And it cannot find anyting. I've only managed to find Plex Home Theatre using this method.

Next I tried:

Code:

sudo pacman -U https://downloads.plex.tv/plex-media-server/0.9.11.17.986-269b82b/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm

Which resulted in an error stating:

Code:

error: failed retrieving file 'plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm.sig' from downloads.plex.tv : the requested URL returned error: 404
warning: failed to download https://downloads.plex.tv/plex-media-server/0.9.11.17.986-269b82b/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm.sig
loading packages...
error: '/var/cache/pacman/pkg/plexmediaserver-0.9.11.17.986-269b82b.x86_64.rpm' : package missing required signature.

I mean, what am I doing wrong? Can someone please tell me exactly what to type in to download and install PMS?

Cheers

Hello,

I try to use a ftp daemon and a Telnet daemon with inetd and the BusyBox v1.19.0 on a linux 2.6.24.

When running inetd and then checking what is listening with "netstat -an |grep LISTEN" i have :
Code:

netstat: /proc/net/tcp6: No such file or directory
netstat: /proc/net/udp6: No such file or directory
netstat: /proc/net/raw6: No such file or directory
tcp        0      0 0.0.0.0:80              0.0.0.0:*               LISTEN

tcp        0      0 0.0.0.0:21              0.0.0.0:*               LISTEN

tcp        0      0 0.0.0.0:23              0.0.0.0:*               LISTEN

ftp port 21 and Telnet port 23 seems to be listening.

My inetd.conf file is :

Code:

#<service_name>    <sock_type>    <proto>    <flags> <user>     <server_path>     <args> 

21 stream tcp nowait root ftpd ftpd /etc
telnet            stream        tcp        nowait    root    /usr/sbin/telnetd

I have no rule in my hosts.deny so nothing should be stopped and i have no iptables firewall in place too.

When typing "ftp://ipofthetarget" in a web browser i have a error :

Code:

504 Gateway Timeout
Gateway timeout expired while waiting for server response.

And when trying to Telnet from another computer or "Telnet localhost" from the board i have :
Code:

# telnet 10.2.29.201
Trying 10.2.29.201...
connected to 10.2.29.201.
Escape character is '^]'

Connection closed by foreign host.

This would mean that the connection for Telnet exist but why is it closing ?

Thank you for your future answers !

UPDATE 1 :
If i try to run telnetd like this :
/usb/sbin/telnet -l /bin/sh
i can connect anonymously from another computer, not perfect because i would like a user/password but still of use.
The problem with the ftp daemon still exist.

UPDATE 2 :
Trying from Windows cmd or linux terminal : ftp ipofthetarget seems to work
Not perfect because i would like a user/password too but still of use.

I am still open for suggestion for the user/password thing. I am not deleting the thread in case someone interested about this exist.