0
votes
0answers
32 views

ip route get recognizes address as anycast

# ip route get 1.2.3.4 anycast 1.2.3.4 dev eth0 src 5.6.7.8 and the question is how does it know the address is an anycast ? (which apparently is true).
0
votes
0answers
24 views

Windows 7 setup routing between 2 networks [migrated]

Situation: | access point | wi-fi | my machine | | 2-nd machine | | 192.168.1.1 | --------- | 192.168.1.37 | Ethernet | | Internet ---- ...
-3
votes
1answer
38 views

choosing network interface based on network purpose [closed]

i have 3 NIC with ip address 10.10.10.2-eth0, 10.10.10.3-eth1, 10.10.10.4-eth2 An NFS server with IP 10.10.10.5 and want this NFS share to be accessed only through 10.10.10.3 that is through eth1 ...
1
vote
2answers
11 views

Can a cisco router execute a command itself?

I'm experiencing a problem with my Cisco router 1900 Series, the router sometimes stop routing packets, and when i log into it and show the running-config i see no ip routing executing ip routing ...
-1
votes
3answers
51 views

What happen when I assign 2 IP on one NIC? [closed]

What happen when I assign 2 IP on one NIC? e.g. I have one physical NIC (eth0) and I assign on this interface 2 IPs from different network. e.g. auto eth0 iface eth0 inet static address ...
1
vote
1answer
305 views

ping works but ssh fails

machine1 IP: 172.30.11.119 machine2 IP: 172.30.11.120 machine3 IP: 172.30.11.121 machine4 IP: 172.30.11.122 Note: These machines are connected to LAN. I have configured the static ...
1
vote
2answers
763 views

Can't access local web server using remote ip from within LAN

Since I've change my ISP, the current router (ADB P-RG A4202N) won't let me access my web server from within my local network using my remote IP or no-ip host - it redirects me to the router config ...
0
votes
0answers
66 views

Tracert of a spoofed IP results in Infinite Loop

Our firewall picked up a spoofed IP address that caught my attention. When I did a tracert to the spoofed IP address I get what I think is an odd response. Tracing route to 192.168.1.7 1 1 ms ...
1
vote
0answers
104 views

Proper way of setting gateway outside of subnet on FreeBSD?

I have a VPS running FreeBSD 10 and it is located in OVH's BHS datacenter. The gateway for my VPS is not in the same subnet as my IP address and when I went to set the gateway the usually way, it ...
1
vote
1answer
167 views

One IP for whole LAN, provide access to local server outside the LAN [closed]

I have a LAN with multiple PCs and some servers. I would like to provide access to one of the servers from outside the LAN. The problem for me is I have one IP address for the whole LAN. The server is ...
-1
votes
1answer
39 views

How can I ensure HTTP requests from many servers goes through one IP address? (i.e. client-side load balancing)

We have many machines that for security reasons need to communicate through a somewhat static set of IP addresses. ("Somewhat" meaning, manual maintenance once in a while is okay, but new IPs cannot ...
1
vote
1answer
66 views

Prevent hijacking IPs in a bridged network (KVM/libvirt)

Is there a solution to prevent a VM user assign/use IP addresses he doesn't own but are routed over the same bridge like his own addresses? The current setup looks like this with libvirt and KVM: ...
-1
votes
1answer
92 views

How to connect devices behind Comcast router/modem with devices behind wireless router [closed]

I know this is going to seem like a simple solution but I have been unable to find a clear answer through Google. Simple office setup: I have a Comcast modem/router that has 4 hard wired ports. In ...
1
vote
1answer
51 views

Lost as to what I'm not doing in setting up a home lan network [closed]

I'm a PC repair tech and this is a problem I've recently been trying to troubleshoot for a customer. Upstairs they have the main router which servers as the gateway and router, both hardwired and ...
-1
votes
1answer
81 views

Need help routing Cisco network- IP routing [closed]

In the above network, can you help me configure routes so the computers on the left can see the computers on the right, and vice versa? I know the syntax of the command is ip route {network ...
5
votes
4answers
1k views

Openvpn, forward packets very slowly

I rebooted my server, and an odd issue just came out. I am running on ArchLinux, the clients are Ubuntu, Android and Mac. The problem is that accessing the internet via the clients is slow, about ...
1
vote
1answer
82 views

Allow child network to use parent network for internet access - but don't show parent network clients [closed]

I have two Linksys wifi routers. The first one (orange network) with the IP address 192.168.0.1 is connected to the internet. The second one (green network) with the IP address 10.10.10.10 is ...
0
votes
1answer
32 views

Forwarding local network interface on my server through NAT

I have 3 interfaces on my server, first is used for the local network, second and third are internet connections (each has its own ip routing table). How can i force server daemons and command ...
1
vote
2answers
284 views

Web server behind NAT, how to listen for public IP address

I have a debian web server (nginx) running behind a firewall using NAT. The web server is hosting several sites that require SSL and their own IP address. I'd like to have the SSL sites listen to only ...
1
vote
0answers
64 views

Wireless Bridging two Sonicwall Firewalls

We have two sites (essentially two small buildings side by side but we are unable to run CAT5 cable between them) which are currently linked via a wireless bridge. We will be splitting the sites so ...
0
votes
1answer
121 views

How to configure network with two routers?

Is it possible to have two routers in the public accessible subnet? ->forward all traffic for [177.x.x.{3,5,7}] Internet --- [177.x.x.1] ...
0
votes
1answer
168 views

How configure multiple IP Failover on the same VM?

I'm trying to configure multiple IP Failover on the same VM behing Proxmox VE. I've got these IP : IP1, IP2 and IP3. IP1 is the main one. I've configured in Proxmox these IP in veth with theses infos ...
0
votes
1answer
93 views

Forward packets on different private IPs and interface aliasing

I have a server with 2 public IPs. I configured interface aliasing to hold the second IP: # ifconfig vmbr0 Link encap:Ethernet HWaddr 4c:72:b9:4f:18:5f inet addr:public.ip.number.1 ...
2
votes
2answers
62 views

Cisco Network Object NAT to get Internet?

So I've inherited a Cisco ASA 5505, and I have no experience whatsoever with the things! There are two Network Interfaces both WAN facing, and the LAN interface of course. Now in NAT rules, there are ...
0
votes
1answer
72 views

Why are there two types of ICMP Redirect?

Wikipedia lists 4 types of ICMP Redirect reasons: 0 Redirect for Network 1 Redirect for Host 2 Redirect for Type of Service and Network 3 Redirect for Type of Service and Host I understand ...
0
votes
1answer
156 views

Datacenter ISP wants to assign an IP range to an existing ip address that we already use

I have a question about the setup of our data center regarding a new IP range. The situation is as follows. we own/use a range x.x.x.x/28 we got it already from our data center. we have 16 addresses ...
1
vote
1answer
209 views

Default Gateway in a VLAN

Could I have a router/firewall device providing WAN connectivity, part of a VLAN on a switch? For example: 2, L3 Switches. 2 VLANs DefaultVLAN 10.1.1.0/24 VLAN100 192.168.1.0/24 Two ...
1
vote
1answer
319 views

VLAN Gateways and Routing

This for hypothetical purposes - more of a learning question than an production question. If I have switch (Layer 3, lets say a Procurve) with a handful of VLAN's configured. Lets say: DEFAULT VLAN ...
-1
votes
1answer
157 views

How to access hosts in a different subnet? [closed]

A Windows 2008 server of mine is 192.168.1.1 A server I need to access from the first server is 192.168.2.1 in the same physical network. How do I access it? Can I define a second TCP/IP interface ...
0
votes
1answer
120 views

Proper destination routing on same interface, same subnet but different gateway

How to make sure, on the same interface, to properly route traffic to the same subnet, based on availability of a gateway? e.g. 10.1.1.1/24 interface eth0/1 gateway 10.1.2.1 pref 10 metric 1 ...
0
votes
1answer
252 views

Vyatta change IP packet destination port on forward, based on source IP range

This might be really easy or really impossible - but any help would be great. I want to host a web server with multiple hosts on the same IP but different ports. This host will be routable to the ...
2
votes
2answers
85 views

Migrating an ip address alias from one server to another

I run: /sbin/ifconfig eth0:10 xx.xx.xxx.221 netmask 255.255.255.224 down on box1, and on box2: /sbin/ifconfig eth0:10 xx.xx.xxx.221 netmask 255.255.255.224 up Both boxes are located on the same ...
4
votes
2answers
269 views

EIGRP neighbors flapping

I have a EIGRP topology set up in GNS3. It looks like this: The neighbor relationship between R7 and R8 is constantly flapping and I cannot figure out why. Hello timers and time delays are all set ...
0
votes
1answer
352 views

UDP packets to IP addresses other than specific ones not arriving and not shown in Wireshark

I'm writing a service using UDP, but I can't manage to reply to the client. When sending to the client via the DHCP-assigned IP (192.168.1.143) Wireshark shows no sent packets. The server receives ...
1
vote
2answers
163 views

Excluding four IP's from a /32 static route

I have a Cisco ASA routing a /32 of public addresses (non RFC-1812) through a private link. When the device sees the destination address it selects the private route instead of going out over the ...
0
votes
1answer
176 views

Enterasys What Does the Keyword “recursive” Mean in “ip route” Statement

I'm looking at a configuration for an Enterasys layer 3 switch. I'm trying to diagnose why traffic is going a particular way. One of the route commands has the keyword "recursive" in it. The command ...
4
votes
2answers
159 views

Is this IPv4 and subnet combination public or private? [duplicate]

Possible Duplicate: How does IPv4 Subnetting Work? I thought I understood this but I am momentarily confused. Here is an example: Are all IPv4 addresses from 192.168.0.0 to 192.168.255.255 ...
3
votes
1answer
83 views

How can I tell if a host is bridged and acting as a router

I would like to scan my DMZ for hosts that are bridged between subnets and have routing enabled. Since I have everything from VMWare servers, to load balancers on the DMZ I'm unsure if every host is ...
1
vote
0answers
70 views

Precenting ISP IP leakage using VPN gateway service

I read a post here on serverfault detaling a procedure to re-route gateway traffic to a fake gateway to prevent ISP IP leakage if VPN dropps. My questions to adapt this prcedure to my specific needs ...
1
vote
1answer
912 views

pfSense routing between two routers with shared network

I have a network set-up using two pfSense routers arranged like this:- DMZ1 WAN1 WAN2 DMZ2 | | | | | | | | \___ PF1 PF2___/ | ...
1
vote
2answers
218 views

Static Routes and the Routing Table

This is very much a learning question if someone would be happy to explain a couple of concepts. My question is - the default routing table that exists in, in my case, a default Windows 7 install, ...
5
votes
2answers
5k views

Debian/OVH: How to configure multiple Failover IP on the same Xen (Debian) Virtual Machine?

I have a problem on a Xen virtual machine (running latest Debian), when I try to configure a second failover IP address. OVH reports that my IP is misconfigured and they complaint they receive a ...
-2
votes
2answers
410 views

rhel routing without NAT using iptables

I need to set up routing, preferably with iptables, that does no NAT. Basically I will have a number of clients on subnet 192.168.1.0/24 and they need their traffic to go through a gateway, say ...
1
vote
1answer
48 views

The effect of network masks on default routes in a routing table [duplicate]

Possible Duplicate: How does Subnetting Work? If you setup a default route in a IP routing table you provide a network mask. What difference does it make if the mask is 0.0.0.0 compared to ...
0
votes
1answer
182 views

Which Range to use for routing table

I have 2 Interfaces. One for WAN and other for Internet (this one does not have National Internet Exchange routing). I usually find IP from a peer in my area and then search it in apnic.net. There I ...
-4
votes
2answers
96 views

How to access an IP address as if on a different network using SSH [closed]

In preparation for a lengthy business trip, I set up my router such that I can access my home computer over the internet via port forwarding over SSH. One thing I neglected to do was setup access to ...
4
votes
2answers
198 views

Impact of MTU on IP packet fragmentation and reassembly

Let's say computer S (sender) sends some IP packets to computer R (receiver). Between S and R, there are 6 networks, divided by 5 routers. So the IP packets leave R, go through network 1, pass router ...
2
votes
3answers
4k views

Routing WIFI and LAN for specific traffic

I have two network devices aboard my macbook pro: WIFI (en1): Used for general traffic. Connects to an ip of 192.168.19.* via DHCP LAN (en0): Used for specific traffic. Connects to an ip of ...
2
votes
1answer
171 views

Can fragments of a packet be refragmented again?

In IPv4, fragmentation is done by routers on way to the destination if DF(do not fragment) flag is not set in the IP packet. Once a packet is fragmented, its fragments may take different paths (due ...
1
vote
2answers
1k views

What is the difference between flow control and congestion control at layer 2 and 3? [closed]

Is there a difference between flow control and congestion control at the following layers? layer 2(data link layer) layer 3(network layer) If they are not same, then how is each handled at the ...