11-29-2011
routing problem/question
Internet Gateway
192.168.0.201
Server 1
192.168.0.101
192.168.1.101
192.168.2.101
gateway: 192.168.0.201
VIP: 192.168.1.100
VIP: 192.168.2.100
Server 2
192.168.0.102
192.168.1.102
192.168.2.102
gateway: 192.168.0.201
Client 1
192.168.2.201
gateway: 192.168.2.100
From Client 1, I can ping 192.168.2.102 (Server 2), this would make sense all three computers are on the same network. However, from client 1, I cannot ping or ssh to 192.168.1.102 (server 2). Why? I don't know. Using wireshark, I can see the ICMP echo request go through server 1 and pass to server 2. This path makes sense. I see the echo request being recieved on the 192.168.2.102 NIC on Server 2. But no response is sent out on either NIC on Server 2. Why?
I have made no routing table modification on either server. I have IP forwarding set in sysctl.conf on both servers. I have iptables turned off. The only way I can ping from client 1 to 192.168.1.102 (server 2) is enabling masquerading in iptables on both servers on all interfaces. The question is: why can't client 1 ping to 192.168.1.102 with no modifications to any routing table and with the iptables service stopped?
10 More Discussions You Might Find Interesting
1. IP Networking
Hi
I know this problem is more likely some windows problem but it has also something to do with unix.
We have a windows nt environment wich uses AIX (unix) machines as file servers (samba). In our windows network environment we nicely see al the unix file servers via the 10 MB network. Last... (2 Replies)
Discussion started by: Mark Detrez
2 Replies
2. IP Networking
following Problem.
I configured my SuSE Linux 8.0 as a router. I4l, named, ip_forward, iptables (NAT/MASQUERADING) are running or are aktivatet.
I just can get a internet connection about the proxy server squid, but if i want to use other protocols i need functional routing.
(I had this... (1 Reply)
Discussion started by: razor
1 Replies
3. IP Networking
I have a question concerning networking. Could any forum
members explain to me why I might be getting "no route
to host" messages when I try to connect through ftp and
http protocols?
I have went to my etc/hosts file and everything seems to be
configured properly. I can connect within my... (1 Reply)
Discussion started by: cstovall
1 Replies
4. IP Networking
We have an HPUX machine that is having a routing problem. Any traffic sent on the local network (same switch) works fine. However, when we try to send traffic to any other ip the machine NAT's the ip to that of the gatway and nothing goes any further.
For example if I try to ping 10.1.1.1 from... (3 Replies)
Discussion started by: robanic
3 Replies
5. IP Networking
hi,
below is the situation:
my server is in 128.10.200.xxx network.
i have a solaris computer running in a subnet. this computer got 2 nic card.
1 is 172.18.198.xxx , another 1 is 10.100.xxx.11
there is a machine stick with this computer, ip is 10.100.xxx.12
so, 10.100.xxx.11 and... (3 Replies)
Discussion started by: kyhah
3 Replies
6. Solaris
Hi,
I got problem of Sun Solaris 8 routing.
IP of SunA is 10.16.64.164, and have routing table:
10.16.64.0 10.16.64.164 U 1 19236 bge1
10.6.0.0 10.6.0.3 U 1 16534 bge0
224.0.0.0 10.6.0.3 U 1 ... (4 Replies)
Discussion started by: milo
4 Replies
7. Red Hat
I have below routing table in linux kernel 2.6.9
# netstat -rn
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
10.155.24.0 0.0.0.0 255.255.252.0 U 0 0 0 eth0
169.254.0.0 0.0.0.0 255.255.0.0 U ... (5 Replies)
Discussion started by: chuikingman
5 Replies
8. Red Hat
hi,
having an issue on a class C network with trying to get a redhat diskless setup going. I am using oracle enterprise 5, which is RHEL 5.3 i believe.
here is the scenario:
sun sparc m4k that i am planning on making the red hat boxes boot off after i get the network issue fixed.
... (3 Replies)
Discussion started by: caddyjoe77
3 Replies
9. AIX
I need the following solution , please help me...
Current situation
ip: 192.168.0.12 persistent and 192.168.254.12 service ip
gateway: 192.168.0.254
subnet: 255.255.255.0
i have added a new ip on a new nic
ip: 10.10.255.40
gateway: 10.10.255.62
subnet: 255.255.255.224
... (1 Reply)
Discussion started by: rajibimran
1 Replies
10. Solaris
Hi,
I have two physical interfaces on a servers.
We have connected them to differerent subnets.
1) First interface:
10.158.49.87 to newtwork 10.158.49.0, its gateway is 10.158.49.1
(It is added as default gateway)
It is existing set up. It works well
2) Second interface:
... (1 Reply)
Discussion started by: sri243
1 Replies