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Results tagged with routing
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user 213402
Questions about using a router/networking, e.g. port forwarding, VPNs
-1
votes
2
answers
70
views
Is it possible that one host is unreachable from another host, over the internet? [closed]
There are two hosts, A and B, in different locations, and they are connected to the internet; for the following cases, is it possible that:
B can receive packets from A, but A can't receive packets …
- 3,055
0
votes
2
answers
87
views
for a pair of hosts on Internet, are the routes the same in two directions?
for two hosts on Internet
when a host send a packet to another host
there is a route between them
is the route the same on two directions?
for example, two hosts A and B
1) the route from A to B
2) t …
- 3,055
6
votes
1
answer
15k
views
is it possible to detect the model/brand of a remote router?
I can use traceroute to find the route from my host to a remote host.
is it possible for me to check what are the brand/model of the routers in the route?
for example, is it a cisco router or huawei …
- 3,055
0
votes
2
answers
335
views
in OSPF routing, how routers inside an area get to know the routing outside the area?
in OSPF routing, the information exchanged between routers in an OSPF area is link state.inside an area. … Through the link state information, each router can construct a routing table inside the area. …
- 3,055
0
votes
1
answer
364
views
How do routers deal with IP packets whose source IP or destination IP is all zero?
All zero IPs are said to be unknown IPs.
I'm wondering, if the source IP or the destination IP of a IP packet is all zero, how do IP routers deal with it?
FYI: I'm doing research, and I want to use …
- 3,055
0
votes
1
answer
1k
views
How do default-free zone routers route IP packets if there is no matching route?
Conceptually, DFZ routers have a "complete" BGP table, sometimes referred to as the Internet routing table, global routing table or global BGP table, but, realistically, the widespread use of route filtering … and the rapid rate of change in Internet routing ensure that no router anywhere has an absolutely complete view of all routes, and any such routing table would, in any case, look different from the perspective …
- 3,055
4
votes
2
answers
1k
views
why IP in different countries are in the same autonomous system?
I notice some IPs, they are not in the same country, and these countries are not neighbors,
but they share the same Autonoumous system number
how can this happen?
- 3,055
0
votes
0
answers
336
views
openvpn interface, local routing and linux kernel routing table
I think the problem is due to local routing, in his test, it seems that the system regard 10.0.0.1 as the default gateway for subnet 10.0.0.0/24, but in my test, it is not the case. … overruns:0 frame:0
TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:420 (420.0 b) TX bytes:0 (0.0 b)
route -n
Kernel IP routing …
- 3,055
11
votes
2
answers
20k
views
private address in traceroute results
I SSH into a remote host 194.199.68.165 and then use traceroute to check paths to 132.227.62.122 , and I notice that there are some private IPs, like 10.230.10.1
bash-4.0# traceroute -T 132.227. …
- 3,055
2
votes
0
answers
2k
views
local routing with openvpn : ping: sendmsg: Operation not permitted
dev wlan0 proto static
10.0.0.0/24 dev tun1 proto kernel scope link src 10.0.0.2
128.93.0.0/16 via 128.93.176.116 dev cscotun0 proto none notify
[root@kitty temp]# route
Kernel IP routing …
- 3,055