similar to: CentOS as a router

We use a dual homed CentOS-6.3 host for our Internet gateway router. Its internal nic (eth1) is configured such that the address 192.168.0.1 is one of its aliases. # cat /etc/sysconfig/network-scripts/ifcfg-eth1:192BOOTPROTO=none BROADCAST=192.168.255.255 DEVICE=eth1:192 IPADDR=192.168.0.1 IPV6INIT=no MTU="" NAME="LAN - Non-routable" NETMASK=255.255.0.0 NETWORK=192.168.0.0

CentOS-6.6 We have a host that has multiple IPv4 addresses aliased to eth0. The primary address is 216.185.71.x and the alias is 192.168.6.x. This host connects to devices on both netblocks without problems. Only default routing is used and it looks like this: #ip route 192.168.6.0/24 dev eth0 proto kernel scope link src 192.168.6.x 216.185.71.0/24 dev eth0 proto kernel scope link src

I have set up a VPN over PPTP on a CentOS server using the DKMS module rpm dkms-0-2.0.6-3.el4 from http://centos.karan.org/el4/extras/stable/i386/RPMS/repodata/repovie w/dkms-0-2.0.6-3.el4.kb.html and kernel_ppp_mppe-0.0.5-2dkms.noarch.rpm at http://pptpclient.sourceforge.net/howto-fedora- core-3.phtml. I have configured the pptpd server on Centos4 to use MS_CHAPv2, 128bit encryption and

We have a FreePBX-12 / Asterisk-12 setup that supports about 24 extensions, most internal Snom870s but six or so external (Jitsi-2.8). we use TLS and SRTP everywhere on our side of the fence. The server host is a dedicated atom(tm) box using the FreePBX distro (CentOS-6.x) and is up-to-date. Registrations require very long random passwords and registrable devices are further restricted by

I am seeing log file entries like this: IN=eth0 OUT=eth1 SRC=109.74.193.253 DST=x.y.z.34 LEN=122 TOS=0x00 PREC=0x00 TTL=48 ID=49692 PROTO=ICMP TYPE=3 CODE=3 [SRC=x.y.z.34 DST=109.74.193.253 LEN=94 TOS=0x00 PREC=0x00 TTL=53 ID=41330 PROTO=UDP SPT=34679 DPT=53 LEN=74 ] This is found on our gateway host. eth0 is the WAN i/f, eth1 is the LAN i/f. Our netblock is x.y.z.0/24. Can somebody tell me

I am trying to transport a dd image between to hosts over a cross linked gigabit connection. Both hosts have an eth1 configured to a non routable ip addr on a shared network. No other devices exist on this link. When transferring via sftp I received a stall warning. Checking the logs I see this: dmesg | grep eth e1000e 0000:00:19.0: eth0: (PCI Express:2.5GT/s:Width x1) 00:1c:c0:f2:1f:bb

I am contemplating converting some of our internal networks from routable to private IPv4 address space. I have a question about RIP as implemented under Cisco IOS 12.x. Presently the setting for rip is: router rip version 2 passive-interface [[FastEthernet]]0/0 network aaa.bbb.ccc.0 no auto-summary What I would like to know is how one routes the entire 192.168/16 address space using rip.

Arch = x86_64 OS = CentOS-6.4 (centos) with all updates applied to date. On our gateway host eth0 is the WAN access and eth1 is the LAN. I wish to activate the address 192.185.71.1 on eth1. The ifcfg-eth1:192071 file contains this: NAME="" BOOTPROTO=none MACADDR="" IPV6INIT=no DEVICE=eth1:192071 NETMASK=255.255.255.0 MTU="" BROADCAST=192.168.71.255 ONPARENT=no

CentOS-6.5 (FreePBX-2.6) Asterisk-11.14.2 (FreePBX) snom870-SIP 8.7.3.25.5 I am having a very difficult time attempting to get TLS and SRTP working with Asterisk and anything else. At the moment I am trying to get TLS functioning with our Snom870 desk-sets. And I am not having much luck. Since this is an extraordinarily (to me) Byzantine environemnt I am going to ask if any of you have gotten

Where can I find a list of the options and their usage and meanings for the contents of this file? Regards, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada

[root at smb4-1 ~ (master)]# samba-tool dns query localhost brockley.harte-lyne.ca brockley.harte-lyne.ca ALL -U administrator Password for [BROCKLEY\administrator]: Name=, Records=4, Children=0 SOA: serial=3, refresh=900, retry=600, expire=86400, minttl=3600, ns=SMB4-1.brockley.harte-lyne.ca., email=hostmaster.brockley.harte-lyne.ca. (flags=600000f0, serial=110, ttl=3600) NS:

This is mildly off topic since it has more to do with TCP/IP networking than with CentOS per se. However, at the risk of ruffling a few feathers I would like some advice on how to resolve the following routing problem: Given: dual homed host running CentOS-5.2 with eth0 = 2xx.yyy.zzz.23 eth1 = 192.168.219.1 and a Cisco gateway at 2xx.1xx.y7y.1 with the following networks: interface

I am obviously missing something basic here but can someone explain to me what is wrong with the first statement, which returns nothing? $ history | grep ^su $ history | grep su 2997 su -l 3024 su -l 3050 su -l 3054 su -l Thanks, -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB at Harte-Lyne.ca Harte & Lyne Limited

This morning I applied the 13 or so new updates to my servers. On one of them the ssh service and clients stopped working immediately after the update. I restarted the server in anticipation that there might be some instability introduced by updating on a system with active ssh connections. However, this has not cleared the problem. The packages in question are: openssh.i386

I am attempting to get a script borrowed from DJB to work on my CentOS-6.6 box. Simplified it looks like this: tcpdump -l -n -e port 53 \ | awk '{if ($14 ~ /A.*?/) print $15}' \ | while read domain ; do echo $domain ; done ; The sticking point is the 'while read' construct. Run just as 'tcpdum | awk' I get this: english.stackexchange.com. www.urbandictionary.com.

I am working on the Agile programming tutorial and trying out some ruby code. Can someone tell me why the following works: <h1>Display Cart</h1> <p> Your cart currently holds <%= @items.size %> <%= @items.size == 1 ? "item" : "items" %>. </p> while this does not? <h1>Display Cart</h1> <p> Your cart currently

I am trying to package ruby-1.8.6 for CentOS-4.5 and I would like to take a look at the spec files used for ruby-1.8.1 that ships with CentOS. Is there any place that I can see these or could someone do me the kindness of sending them to me? I am also confused as to how one breaks out the component parts of a build into separate rpm packages. The source distribution from ruby-lang.org seemingly

In the agile/rails tutorial book the following construct is added to products.rb. def self.salable_items find( :all, :conditions => "date_available <= now()", :order => "date_available desc") end Now, I wish to extend :conditions => to exclude products that have a nil value for the price. I have tried different syntax

I am in the middle of a rather confusing situation. At the moment I am unable to shutdown a KVM guest machine. Nor am I presently able to open a virt-manager session on the host. I am not exactly sure what has happened but the problem with the vm guest is that issuing a "virsh shutdown 1" from the root console has no effect. # virsh list Id Name State

I had cause to install the Skype for Linux package from the NUX repo. I discover that this package is configured to automatically start Skype whenever one logs on to the Gnome desktop. This behaviour I do not wish. However, there seems to be no option in Skype to turn that 'feature' off. Is there any way to disable this in Gnome or elsewhere? I will be removing Skype shortly when the