similar to: Problem with CentOS server: am I running a firewall?

Recently, someone or something has been turning off IP forwarding on my CentOS server: -------------------------- [tim at william NumberTheory]$ sudo sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 0 [tim at william NumberTheory]$ sudo sysctl -w net.ipv4.ip_forward=1 net.ipv4.ip_forward = 1 [tim at william NumberTheory]$ sudo sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 1

My CentOS-7 home server has a static IP address. Is there a simple way of organizing the hpptd server so that it is accessible through this address at a remote host, but is accessed at its 192.168 address by a laptop on the WiFi LAN? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

I'm getting repeated email (KMail) error messages about one apparently over-large post: -------------------------- Received: from helen.gayleard.com (localhost.localdomain [127.0.0.1]) by helen.gayleard.com (Postfix) with ESMTP id E4500294A0 for <tim at helen.gayleard.com>; Sat, 24 Jan 2015 14:00:05 +0000 (GMT) Received: (from tim at localhost) by helen.gayleard.com

The mirrorlist entry in my Fedora-11 /etc/yum.repos.d/fedora-update.repo reads: mirrorlist=https://mirrors.fedoraproject.org/metalink?repo=updates-released- f$releasever&arch=$basearch As far as I can see, this means that yum is looking for the file metalink at mirrors.fedoraproject.org ? If I try "sudo yum update" I get: ----------------------------------- [tim at elizabeth ~]$

Does anyone know if the program stunbdc, which prints one's IP address, is available in CentOS-5? It comes with the libnice package in Fedora-11. ------------------------------ [tim at rose ~]$ stunbdc -4 stun.ekiga.net Server address: 75.101.138.128 port 3478 STUN transaction started (timeout 600ms). STUN unknown: 0 mandatory attribute(s)! Received 88-bytes STUN message No

Has the CentOS logo disappeared from CentOS-7? I thought the logo in CentOS-6 was very pleasant. Also I liked the way in which one increasing circle inside another showed how the boot was progressing. The dots going round and round in Microsoft fashion in CentOS-7 is a retrograde step, I think. One always has the fear it might continue forever. -- Timothy Murphy gayleard /at/ eircom.net School

I'm running httpd-2.4.6-31.el7.centos.1.x86_64 under CentOS-7 (kernel 3.10.0-229.14.1.el7.x86_64). I cannot get the httpd userdir facility working; when I try to access localhost/Menloe I get the message "You don't have permission to access /Menloe on this server." I see in /var/log/httpd/error_log "Symbolic link not allowed or link target not accessible:

I have a CentOS-5.6 remote server in a house in Italy, where there are occasional thunder-storms. There was one yesterday, when the electricity went off 3 times, for a second or so on each occasion. My server, an HP MicroServer, came back (re-booted) on 2 of the 3 occasions, but not on the third. I assume that the problem arises because the machine does not close down properly. (Although it is

Is there a CentOS equivalent to config-system-firewall in Fedora, allowing specified services to pass through? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

Mike - st257 wrote: > On Wed, Jun 3, 2015 at 6:11 AM, Timothy Murphy > <gayleard at eircom.net> wrote: > >> Has the CentOS logo disappeared from CentOS-7? > > You are referring to Plymouth splash screen while booting. > >> I thought the logo in CentOS-6 was very pleasant. Probably. The fact remains that booting was attractive, and now it isn't. --

Anyone got a recommendation for a cheap (but good) colour laser printer that runs under CentOS-5.5 ? -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College, Dublin 2, Ireland

I'm running CentOS-6 on an HP MicroServer (since this morning) and I'd like to open an non-standard port, for use on a laptop attached to the internet through the server. Do I have to explicitly add an iptables rule? If so, and I want to open (say) udp port 500 , what command should I give? I've always used shorewall in the past, and will probably do so now if the default firewall

I bought a very cheap server yesterday - an HP ProLiant micro server for 160 euro (280 euro with 120 cashback, for some reason). But I was surprised when I opened the box to find it didn't come with keyboard or mouse, and doesn't have the old keyboard/mouse sockets, but requires USB versions. Is that the norm nowadays? Is it possible to convert the old keyboard/mouse plugs? Also there is

My HP MicroServer crashes with a kernel panic when booted into kernel-3.10.0-327.3.1.el7.x86_64, but runs perfectly under kernel-3.10.0-229.20.1.el7.x86_64 . I've been trying to save the panic message with kdump, but am not sure how one can configure kdump to do this, if indeed that is possible. -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

Tru Huynh wrote: > On Fri, Jan 01, 2016 at 11:53:51PM +0100, Timothy Murphy wrote: >> My HP MicroServer crashes with a kernel panic >> when booted into kernel-3.10.0-327.3.1.el7.x86_64, >> but runs perfectly under kernel-3.10.0-229.20.1.el7.x86_64 . > AMD Turion64 cpu? > Could be related to: > https://bugs.centos.org/view.php?id=9860 > uptream at

What is the advantage, if any, of running one's own DNS server? Surely the link between domain name and IP address must already have been established? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College, Dublin

I have a 1.5TB Western Digital hard disk (WD15EADS-00R6B0) on my CentOS-5.7 server, which has become incredibly slow for some operations, eg rsync, BackupPC archive, e2fsck, although it seems to work fine for ordinary file operations, and "smartctl -a /dev/sdb" does not report any errors. For example, running "e2fsck -p /dev/sdb5" on a 250GB partition on this disk took over 24

I'm almost completely ignorant about samba on Windows machines, In particular I know nothing about Windows permissions, if that is relevant here. I am running BackupPC on a CentOS-5.3 machine. It works perfectly for backing up Linux folders, but I have great difficulty extending it to Windows clients. To be precise, I have a share called "EA Games D" on a machine running Windows XP

If I boot into CentOS on my home server from a Live CD or USB stick and go to Troubleshoot, it lists OS's it finds on the machine. How does it find these OS's? Presumably it looks through all the partitions on all the hard disks for something that looks like an OS? But how exactly does it identify an OS? -- Timothy Murphy gayleard /at/ eircom.net School of Mathematics, Trinity College,

When I re-booted my HP MicroServer into CentOS-7.2 I was given a text console. When I run "startx" I get the response on screen [edited]: ===================== [tim at alfred ~]$ startx xauth: file /home/tim/.serverauth.21307 does not exist X.Org X Server 1.17.2 Release Date: 2015-06-16 X Protocol Version 11, Revision 0 Build Operating System: 2.6.32-220.17.1.el6.x86_64 ... Build ID: