Networking :: Blacklist IPV6 Entries Not Sticking
Aug 23, 2010
Here is what I tried:
Since I had no aliase in /etc/modprobe.d/, I made one. I have also added entries to blacklist.conf ( even tried blacklist with out the .conf ), added entry to sysctl.conf, and added a no load to my grub.conf ( /etc/default/grub). I am still seeing ipv6 in netstat but not when I check lsmod. Below are my entries:
Code:
cat /etc/sysctl.conf | grep ipv6
#net.ipv6.conf.all.forwarding=1
net.ipv6.conf.all.accept_redirects = 0
net.ipv6.conf.all.accept_source_route = 0
net.ipv6.conf.all.disable_ipv6 = 1
Code:
cat /etc/modprobe.d/blacklist
blacklist ipv6
install ipv6 /bin/true
Code:
cat /etc/modprobe.d/blacklist.conf | grep ipv6
blacklist ipv6
install ipv6 /bin/true
Code:
lsmod | grep ipv6
#
Code:
cat /etc/default/grub | grep DEFAULT
GRUB_DEFAULT=0
GRUB_CMDLINE_LINUX_DEFAULT="ipv6.disable=1 quiet splash"
Any ideas why I am still seeing service listing with ipv6?
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Sep 18, 2009
I have seen several threads lately about slow internet connections here and elsewhere, but I haven't seen anyone post a reply about blacklisting ipv6 so I am curious as to why?Is ipv6 enabled only on certain distro's or is there some other reason that it's not mentioned?
<If anyone wants to try it, to see if it would work for them>
On Slackware 12.2 and Salix 13.0 just add "blacklist ipv6" to the /etc/modprobe.d/blacklist file. I'm not sure about non-slackware based distro's. Unfortunately, I don't know any way of doing it without rebooting.
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Jul 22, 2009
I used to play with gw6c ( a client for tunnel broker ) It works well with fedora9 , fedora 10, but not with leonidas. my rpm is gw6c-6.0-0.4.beta4.fc9.i386.rpm ( a little old!) when I tried to install i have got this: libcrypto.so.7 est ncessaire pou w6c-6.0-0.4.beta4.fc9.i386 I try to make a soft link to libcrypto.so.0.9.8k, but nothing; The question :-Is there a solution for that pb - did you know a better client for non native ipv6 connectivity?
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Aug 31, 2011
I have been struggling to get FC15 to act as an IPv6 router for a while now, am sure I am missing something trivial.. The idea is that I have a ppp / adsl connection (this works fine), use the wireless card on my pc with hostapd and dhcpd to provide connections to other pcs (works fine), and radvd to delegate ipv6 addresses.
The issue seem to be that as soon as I turn on ipv6 forwarding (net.ipv6.conf.all.forwarding =1), the ppp connection no longer gets an IPv6 address. This means the router cannot ping any ipv6 address outside my network.
If I disable ipv6 routing, my router gets an IPv6 address on its ppp connection, and can ping things such as ipv6.google.com just fine, however (of course) no packets are forwarded from my network and radvd complains that forwarding is disabled.
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Mar 29, 2009
I have a server setup that is getting repeatedly hit by the same IP address it has tried accessing my vsftp and /drupal/cron.php. For security reason I have disabled vsftpd while I am not using it. The webserver on the other hand I need to leave running.
Code:
- pam_unix Begin -
vsftpd: Unknown Entries:
check pass; user unknown: 2708 Time(s)
authentication failure; logname= uid=0 euid=0 tty=ftp ruser=Administrator rhost=211.161.251.123 : 2282 Time(s)
authentication failure; logname= uid=0 euid=0 tty=ftp ruser=administrator rhost=211.161.251.123 : 426 Time(s)
- pam_unix End -
I would like to be able to add the ip to a blacklist. Additionally I would like to whitelist my own ip when I am working remotely, my remote location doesn't match my reverse dns and my server gives me an error at the end of the day that someone (myself) might be trying to break in. Running Fedora Core 9 in case it matters.
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Sep 8, 2010
So I run "xmodmap" in my xinitrc to make caps lock a second control button, but for some reason its not sticking. I'm not using a desktop environment, just running xmonad.If I run "xmodmap ~/.Xmodmap" once X is started, it works fine, but it won't run in my xinitrc.
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May 28, 2009
I'm updating many servers blacklist manualy. from time to time. I want to create a blacklist and host it on a website, and servers will update from this list regularly. For servers I'm using:
Centos
iPcop
Smoothwall
And for proxy I'm using Squid. And I dont use squidguard.
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Feb 19, 2011
I am in the right forum for this question, but I need help regarding Grub. I just installed Ubuntu 10.10 in hopes of dual-booting with Windows XP. (XP was already installed.) When I boot up, the Grub menu flashes briefly on the screen, then it immediately boots Ubuntu, which is the default. I've searched the forums and only found information regarding setting the defaults in /etc/default/grub. I already have them set to:
GRUB_DEFAULT=0
#GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_TIMEOUT=10
I'm using a laptop with centrino processor, in case that has any bearing.
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Jan 21, 2010
I installed Redhat nash version 5.1.19.6 with kernel 2.6.18-128.el5-xen-i686 on a Dell Inspiron 1300 with Broadcom BCM4401 (eth0/LAN) and BCM4318 (eth1/WLAN). eth0 is working fine, but eth1 was causing trouble. After some difficulties with missing packages I managed to install ndiswrapper, blacklisted module bcm43xx in /etc/modprobe.d/blacklist and removed it, loaded module ndiswrapper and had connection. But after reboot module bcm43xx was again loaded. So blacklisting does not seem to work.And additionally strange to me, I cannot unload module bcm43xx anymore. And if I load ndiswrapper driver bcm43xx is still used as the terminal command 'dmesg' is showing me in the system log, while ndiswrapper was used when the connection was once and only once established
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Nov 29, 2010
I have Ubuntu 10.10 installed on my laptop. My ISP natively supports ipv6, but since last weekend, I do not get an ipv6 ip. When I use a live cd however, I do get an ipv6 ip. For as far as I can see, all settings (/etc/network/interface and the settings in network manager) are exactly the same.
Output of ifconfig:
Code:
eth0 Link encap:Ethernet HWaddr XX:XX:XX:XX:XX:XX
inet addr:XXX.XXX.XXX.XXX Bcast:XXX.XXX.XXX.XXX Mask:XXX.XXX.XXX.XXX
inet6 addr: XXXX::XXXX:XXXX:XXXX:XXXX/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
[Code].....
EDIT: is there a way to let the netwerk be automatically configured as happens during installation? It would be nice to start with a clean and new set of network config files as there were just after I installed Ubuntu on my system, without a full reinstall of my system.
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Jun 30, 2009
I have a problem with my ipv6 connection: although I can't get ipv6 address with DHCP, I can't use ipv6 network. I tried [URL], and the tortoise is static. I want to fix it out , so I use 'ifconfig' to see my network configuration:
eth0 Link encap:Ethernet HWaddr 00:50:8d:ef:dd:06
inet addr:210.77.9.102 Bcast:210.77.11.255 Mask:255.255.252.0
inet6 addr: 2002:d24d:b64:4:250:8dff:feef:dd06/64 Scope:Global
[code]....
Some people told me that the fisrt ipv6 address was wrong and unsuitable for ipv6 connecting. I tried /ect/init.d/networking restart but it didn't work. How can I use the second address as my ipv6 address and fix the problem out ? Now it seems there is not problem with the ip adress but the route. After watching some video, I suddenly could use ipv6. I did 'ifconfig' again and nothing was different. However, the result from the command 'ip -f inet6 route' changed: the last default route was gone and there was only one default route.
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Jan 12, 2010
I have installed Bind 9.6.1 on my linux pc. I have to resolve domain name using IPv6 address. I have made following entry in the /etc/resolv.conf file code...
address of the machine on which Bind is running. The problem is that I am not able to ping open-ims.test domain name. If I use IPv4, everything works fine but how to ping domain using IPv6.
I have also made changes in dnszone file by replacing IPv4 address with IPv6 address and also changing A to AAAA.
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Nov 21, 2010
I want to add repository using ipv6. So, I add a xxx.repo file in /etc/yum.repos.d/. Just like it:
[sjtu6]
name=Fedora $releasever - $basearch - ftp6.xxx.xxx.xxx
baseurl=ftp://ftp6.xxx.xxx.xxx/fedora/releases/$releasever/Everything/$basearch/os/
enabled=1
gpgcheck=1
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-fedora-$basearch
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Nov 4, 2010
I have a networking problem with my computer. Under Windows, the computer can get both v4 and v6 address via DHCP. However, the same computer can only get v4 address under Ubuntu. Does anybody know how to solve this problem?
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Jan 14, 2011
The goal: ipv6 connectivity using 6to4 The problem: no connectivity on some internal hosts (mixed win & debian) and no ipv6-web access on any host. Let's start with my external box. It is headless debian lenny dhcp/local-dns & cache/firewall. It has the following interfaces after a reboot:
[Code]...
My understanding is that ipv6 will auto-configure itself and that the radvd file is all that is needed by the external host to give all the ipv6 enabled internal hosts ipv6 web access. My question: How is my external host misconfigured? Or are the problems specific to the internal hosts? I am assuming that I have issues on both the external and internal hosts since some of the internals have golobal ipv6 address and some don't. I do however wish to address the external host first.
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Jul 28, 2009
I have a host and typing ifconfig I get:
eth0 Link encap:Ethernet HWaddr 00:0E:7F:4F:E4:09
inet addr:130.130.9.9 Bcast:130.130.255.255 Mask:255.255.0.0
inet6 addr: fe80::20e:7fff:fe4f:e409/64 Scope:Link
[code]...
and to do a test i want to disable or delete the ipv6 address, but mainteining the other configured parameters. Looking on the ifcfg config file I have
DEVICE=eth0
BOOTPROTO=static
BROADCAST=130.130.255.255
[code]....
and nothing about IPv6... Then, using ifdown-ipv6 could i remove only the ipv6 address?
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Apr 2, 2009
I have tried to disable the ipv6 support in ubuntu 9.04 32bit but the /etc/modprobe.d/aliases does not exist so I can't disable the suport as sugested for the previews versions. I need to disable it becouse it is pounding a total maihem in my vamware machines.
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Mar 26, 2011
I would like to enable ipv6 forwarding . i have ipv6 module loaded.I added net.ipv6.conf.all.forwarding=1 in /etc/sysctl.conf .i tried reboot , did 'service network restart' .
.
Also I tried
sysctl -w net.ipv6.conf.all.forwarding=1
and
[code]....
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Mar 14, 2010
I am trying to create the IPV6 socket and was wondering if anybody has any code strip which I can reuse ?
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Feb 15, 2011
I have a server application that uses loopback addresses to open servers on linux machine.
For IPv4 with one line of configuration I can open many servers according to the mask I use for example with 10.10.10.0/24 I can open 254 servers.
How can I do the same for IPv6 ? I am able to add loopback interfaces but only for one host. Is it possible to add for a subnet ?
If not what is the max number of addresses that I can add ?
I also saw that it add the address only to loopback lo and I can add it to lo:3 for example.
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Feb 18, 2011
I am wondering how I can share connection with my IPv6 connection.
I am using slackware and ip6tables so far. But the problem is that IPv6 or ip6tables has no "-t nat", so how could I just simply share Internet with the computers behind the firewall?
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Jul 7, 2010
I want to know if sysklogd supports IPv6? I have downloaded latest version of sysklogd, which is 1.5 version. But, I didn't see any information about ipv6 support.
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Jul 21, 2010
Hey even I'm not able to telnet to IPv6 address on port 23
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Jan 24, 2011
Will ipv6 use the same routing protocols as v4?....such as OSPF?
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Oct 13, 2010
I am working on Red Hat Linux since last six months and learning it steps by steps. like configurating ftp server,NSF ,DNS and then email server. I want to learn squid server but technically before going into it what you suggest me that may I first learn to configure Linux as a router,Firewall machine or do IP masquerading on a server. Because all these things are directly or indirectly involve in squid.So guide me because going to start squid i may understand Linux IP table ,how to add entries in it,how to delete entries ,I think you understand my point which i want to ask for guidence.
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Jun 2, 2010
Okay I have searched how do I enable ipv6 forwarding?
There is no ip_forward in /proc/sys/net/ipv6/
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Jul 6, 2010
some of you might have experienced the network speed problem that occurs when ipv6 is enabled. So have I. I know about the common workaround of disabling ipv6, but recently I tested the new ubuntu live system, and the problem was gone with ipv6 being enabled.
Now my question is: Do you know what ubuntu is making different? I haven't found an explanation. Is there a better workaround than blacklisting ipv6?
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May 4, 2010
I cannot connect to wirelessly when I have IPv6 enabled for the wireless network card. It works great on ethernet, but if I enable it for the wireless card then I cannot even get IPv4.
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Sep 18, 2010
I'm trying to assign like 80 IPv6 addresses on eth0 for virtual webhosting, but after 55 addresses I get the following error:# ip addr add 2a01:9f8:a171:1651::4b:a8af dev eth0 RTNETLINK answers: File exists.What's the problem? I don't understand that error message at all. Is the number of IPv6 addresses per device somehow limited?Ubuntu 10.4.1 server, 64 bit.
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Nov 15, 2010
I have a small wireless network running IPv6 connected though a 802.15.4 usb stick, and a network connection through eth1. I can access the nodes on the wireless network from my computer, but not from any other on the wired LAN. Also the nodes on the wireless cannot see even the address of eth1. I'm guessing i have to forward all packets from the wireless to eth1 in some way, but am unable to find an guides for this with IPv6.
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