Questions tagged [ip-routing]
The ip-routing tag has no usage guidance.
100
questions with no upvoted or accepted answers
5
votes
1
answer
3k
views
How long is an (accepted) ICMP redirect observed for, and how can I shorten that time?
If a Linux host receives and accepts an ICMP redirect (accept_redirects=1 on the interface in question), how long is this route being cached for and observed? Can I lower that time?
I am asking ...
- 3,462
5
votes
1
answer
1k
views
Can't communicate between multiple interfaces on same subnet
I have multiple ethernet interfaces on one machine, all on the same subnet. Normally these are set up to run on separate VM's, and I understand the limitations imposed by Linux as described here, but ...
- 151
4
votes
1
answer
3k
views
Traceroute time is too long
I m using RHEL 6.5 and eth0 interaface
Interface Ip is 100.x.x.x and when i traceroute to 100.x.x.x it showing one hop that too ip address of interface itself.
For eg traceroute to 100.65.111.14 ...
- 77
4
votes
1
answer
2k
views
Forward IP packets to tunnel device
I have created an tunnel device using
ip tuntap add dev tun0 mode tun user 0 group 0
I then assign it an ip address 192.168.0.1/22
ifconfig tun0 192.168.0.1 netmask 255.255.252.0
On my ethernet ...
- 41
3
votes
0
answers
1k
views
linux ping incorrect source ip
I have a Linux box handling routing for my network.
Here are some relevant configurations (public IP Addresses masked to 192.0.0.x):
IP configuration:
[root@gw ~]# ip addr
1: lo: <LOOPBACK,UP,...
- 419
2
votes
0
answers
4k
views
Cannot connect to Flask server via public IP, only private IP
I have a simple Flask server that echos requests it gets to the terminal. Requests I send it via the device's public IP address do not register.
The flask server is started correctly on all ...
- 121
2
votes
0
answers
288
views
How to assign specific ethernet interface to specific user on Ubuntu?
I have an Ubuntu 16.04 server running with multiple ethernet cards all connected to the internet with distinct IP addresses. I want to configure specific user to use specific card so that they will ...
- 640
2
votes
0
answers
3k
views
In the output of netstat -r, what is the meaning of the "Netif" column and how does it differ to the "Gateway" column?
I can find virtually no documentation of the meaning of the column "Netif" in the output of netstat -rn. Googled for it, searched through the netstat(1) and route(8) man pages and found the following ...
- 159
2
votes
0
answers
147
views
Cisco Switch Routing performance monitoring
It is quite a question for me: I have Cisco Catalyst 2960S switch which is nice hardware even despite its age and EOL. I'd like to set it as small router between several networks within a remote ...
- 854
2
votes
0
answers
155
views
Inter VLAN Routing
I have VLAN 1 and VLAN 2 setup on HP ProCurve Switch, each linked to a different scope on DHCP server.
VLAN1 = 10.220.0.0/23
VLAN2 = 10.210.0.0/21
I can't ping VLAN1 devices from VLAN2 and vice ...
- 185
2
votes
0
answers
794
views
IPSec VPN : Traffic not routing correctly
We have a server which is windows 2008 running on a VPS with a single public IP address.
I've configured the firewall to allow IPSEC VPN connections to be established with our Draytek routers at ...
2
votes
2
answers
194
views
Network topology for both direct and routed traffic between two nodes
Despite it's small size, this is the most difficult network design problem I've faced. There are three nodes in this network:
PC running Windows XP with an internal WiFi adapter.Base station with ...
- 133
2
votes
1
answer
581
views
How do I set up an ssh -w tunnel VPN between AWS VPC and a Linode?
I'm probably not going to use this for the long term, but I still want to know why this isn't working.
I've set up a simple ssh tunnel from my Linode instance to one AWS EC2 instance within my VPC. ...
- 837
1
vote
0
answers
289
views
Server with multiple public IPs - pointopoint configuration, bridge, KVM
I am in the process of configuring a server at the provider Hetzner with several individual IP addresses. On the server should run later several VMs via KVM. For the configuration I have to use ...
- 472
1
vote
1
answer
668
views
Ubuntu UFW log shows public addresses sending traffic to my RFC1918 private address
This is really a routing question but here is the back ground:
I am running Ubuntu 20.04.3 LTS with UFW. My internal network is 10.126.1.0/24. No inbound translations at the Internet edge.
If I ...
- 11