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2
votes
2answers
77 views

netstat — why are IPv4 daemons listening to ports listed only in -A inet6?

I have a computer with: Linux superhost 3.2.0-4-amd64 #1 SMP Debian 3.2.60-1+deb7u3 x86_64 GNU/Linux It runs Apache on port 80 on all interfaces, and it does not show up in netstat -planA inet, ...
26
votes
2answers
2k views

Can TCP provide more than 65535 ports?

Is it possible to setup a Linux system so that it provides more than 65,535 ports? The intent would be to have more than 65k daemons listening on a given system. Clearly there are ports being used ...
1
vote
1answer
72 views

Define specific TTL for each interfaces

After some research, I was wondering if it was possible to define a TTL by interface as I can the Hop Limit definition in ipv6. To change the TTL in IPv4, I can change the file ...
2
votes
0answers
52 views

Allow internet access to public subnet

I'm running ESXi and received a public subnet from Hertzner.de . I've setup everything by using a 'router'-vm and different client-vm's. These client VM's can access the internet through the router-vm ...
0
votes
1answer
48 views

What is the pathname (the directory and file name) of the configuration file used for the DHCP client (not the server!)

(This question refers to the IPv4 client, not the IPv6 client.) (Hint: configuration files are kept under the directory /etc.) It is for a school assignment. I have to use man pages to find it. I ...
4
votes
1answer
686 views

Fedora 18 guest in VirtualBox 4.2: How to assign static IPv4 address to guest regardless of active ethernet interface on host

I have a Ubuntu 13.04 host running VirtualBox 4.2.12. This host has both a wired and a wireless network interface, but only one of which would usually be active at any given time. For example, at home ...
3
votes
2answers
3k views

SSH login via IPv6 successfull while using IPv4 to the same host yields “Permission denied”

I'm currently stumped by a strange problem… I have a dual stack host to which I want to SSH. If I connect via IPv6 everything works like expected datenwolf@foo ~/ > ssh -6 bar.example.com ...
1
vote
1answer
984 views

How can I disable IPv6 in custom built embedded setup

I have an embedded system built using buildroot. I have had a number of network issues, one of which is that my machine cannot see its gateway despite it being on the same subnet. I have tried using ...
1
vote
1answer
312 views

Add ipv4 support to CentOS 6.3

I've installed two identical versions of CentOS using VirtualBox. The first instance works fine and has ipv4 configuration automatically working, but the second instance doesn't; it only comes with ...
7
votes
1answer
334 views

Detect other machine's address in link local?

I have two machines connected in link local IPv4 over a CAT6 cable. Is there a way from host1 that I can determine host2's IPv4 address? I'm on an Debian-derivative running kernel 3.2.0-34-generic.
2
votes
1answer
375 views

How to configure dhcpd to register ipv4 with bind while having static ipv6 addresses?

I have IPv6 configured on my local network via radvd; it advertises a routable IPv6 block, that all the machines auto-configure.s I have IPv4 assigned to a NAT'd block via dhcpd and that updates ...
1
vote
0answers
224 views

openBSD static ip can't connect

I have set /etc/hostname.msk0 to inet 192.168.1.102 255.255.255.0 NONE and /etc/mygate to 192.168.1.1 but still can't ping the router (192.168.1.1) do I need to configure dns to ping ? ...
5
votes
2answers
36k views

Static IPv4 & IPv6 configuration on CentOS 6.2

I try to configure static IPv4 & IPv6 configuration on CentOS 6.2. The configuration below works perfectly : # ifconfig eth0 x.x.x.x/29 # route add defalt gw x.x.x.y # ip addr add dev eth0 ...
2
votes
2answers
201 views

IPv6 NDP timer problem

Need to change Fedora Linux's IPv6 stack for NDP DAD timer changes. How to locate the Fedora's IPv6 and IPv4 stack in Fedora distribution dvd/site so that, we can recompile and generate new stack ?
2
votes
1answer
10k views

Two interfaces, two addresses, two gateways?

I have a system that has two network interfaces with different IP adresses, both of which are in the public address range (albeit via NAT in the case of the first one) and both of which have different ...