Sponsored Content
Operating Systems Linux Red Hat How to set static routes for packets, within the same Network? Post 302994981 by bakunin on Thursday 30th of March 2017 07:41:35 AM
Old 03-30-2017
It looks as the three hosts are on the same subnet. In this case you cannot use "static routes" because any route - static or else - just defines a way to get from one subnet to another, not to get somewhere on the same subnet.

You may want to define a "proxy" server, but you will have to install additional software (which one depends on which protocols you want to be affected by the proxy) on at least the B-server where you want to route the traffic through.

Another possibility is to put the systems on different subnets: A goes to one subnet, C goes to another subnet and B has one interface in in both these networks AND has "IP-forwarding" enabled. This way you can enforce all packets between A and C to go through B and - using a firewall software, you can even apply additional rules for which packets to allow and which to drop (forbid).

I hope this helps.

bakunin
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

Dumping network packets

Hi, My Solaris Workstation has got 4 NICS, out of which one of them(bge3) is unplugged from the rest of the external network & connected to other interface(bge1). The isolated NIC serves as a simulated Ethernet Interface for my application under development. Now, I'd like to capture RAW... (1 Reply)
Discussion started by: smanu
1 Replies

2. UNIX for Dummies Questions & Answers

are dropped packets a sign of network problem?

in a xen environment , i see a lot op dropped packets via netstat -i Is this a sign of network problems, or is it normal to see this kind of numbers? i'm not sure how to interprete the data. is this normal, bad, critical. What are your stats on this? I guess i have a xen issue of some sort,... (1 Reply)
Discussion started by: progressdll
1 Replies

3. AIX

Static Routes question

I added a static route through smit using: Communications applications and Services ==> TCIP/IP ==> Further Configuration ==> Static Routes ==> Add a Static Route ==> Route Type of host Filled in Destination Address, Default Gateway Address and Network Interface of en0. This... (2 Replies)
Discussion started by: jyoung
2 Replies

4. Ubuntu

How to set guest static IP

Hi folks, Ubuntu 8.04 server amd64 - host Ubuntu 6.06 server amd64 - guest KVM I referred; The Kernel Virtual Machine https://help.ubuntu.com/community/KVM and couldn't figure out how to set guest static IP address Host; /etc/network/interfaces # This file describes the... (3 Replies)
Discussion started by: satimis
3 Replies

5. AIX

Capture Network Packets from AIX

Hi, I am using smitty to create and configure a print queue. I am giving a print of a text file to the print queue created. I am using this in network. How to capture network packets of the print from AIX to the printer and printer to AIX. I tried Wireshark to capture network packets. I am... (16 Replies)
Discussion started by: meeraramanathan
16 Replies

6. Solaris

Add Static Routes to new physical address

Hi, I need help to add new route: 10.252.0.138, GW 10.252.0.129 to e1000g1 and 10.252.0.10, GW 10.252.0.1 to e1000g2 tnx (4 Replies)
Discussion started by: mehrdad68
4 Replies

7. IP Networking

I need HELP to Set up Coyote Linux router with 1 static IP & 64 internal static IP

hello, i need help on setting my coyote linux, i've working on this for last 5 days, can't get it to work. I've been posting this message to coyote forum, and other linux forum, but haven't get any answer yet. Hope someone here can help me...... please see my attached picture first. ... (0 Replies)
Discussion started by: dlwoaud
0 Replies

8. IP Networking

Unix Network Routes

I would really appreciate some help with HP UX's Network Routes. Basically, what I want to do is, I would want a system with global ip (eg: 202.144.138.122) to ping/access my HP-UX server which is with private IP address (192.168.1.23). I have all the routers/switches in between properly route... (2 Replies)
Discussion started by: damchey
2 Replies

9. SCO

Static routes in SCO

Hi, Just a question of thought. Why one needs to add static routes on Unix servers ? If I had ethernet card, it already has the settings for gateway for incoming and outgoing requests. We donot have to explicitly set the route it should take. Then what is the use... (3 Replies)
Discussion started by: dextergenious
3 Replies

10. Red Hat

Centos-quick way to check if static routes are persistent

Hi All, Is there a quick way to check whether the current routes on my centos are persistent or not before rebooting ? i can take a route -n output but i may completely lost access to my server if the routes are gone. thanks. (1 Reply)
Discussion started by: coolatt
1 Replies
route(8c)																 route(8c)

Name
       route - manually manipulate the routing tables

Syntax
       /etc/route [ -f ] [ -n ] command args ]

Description
       The  program  is  used  to manipulate the network routing tables manually.  However, normally it is not needed, as the system routing table
       management daemon, should tend to this task.

       The program accepts two commands: add, to add a route and delete, to delete a route.

       All commands have the following syntax:

	    /etc/route command [ net | host ] destination gateway [ metric ]

       In this syntax, destination is a host or network for which the route is to, gateway is the gateway to which packets  should  be	addressed,
       and  metric  is	an  optional count indicating the number of hops to the destination.  The metric is required for add commands.	It must be
       zero if the destination is on a directly-attached network, and nonzero if the route utilizes one or more gateways.

       When adding a route with metric 0, the gateway given is the address of this host on the common network, indicating the interface to be used
       for  transmission.   Routes to a particular host are distinguished from routes to a network by interpreting the Internet address associated
       with destination.  The optional keywords net and host force the destination to be interpreted as a network or host, respectively.   If  the
       destination  has  a local address part of INADDR_ANY, then the route is assumed to be to a network. Otherwise, it is presumed to be a route
       to a host.  If the route is to a destination connected via a gateway, the metric should be greater than 0.  All	symbolic  names  specified
       for a destination or gateway are looked up first as a host name using If this lookup fails, is then used to interpret the name as that of a
       network.

       The command uses a raw socket and the SIOCADDRT and SIOCDELRT ioctls to do its work.  As such, only the superuser can  modify  the  routing
       tables.

Options
       -f   Flushes  the routing tables of all gateway entries.  If is used with one of the commands described above, the tables are flushed prior
	    to the command's application.

       -n   Prevents attempts to print host and network names symbolically when reporting actions.

Restrictions
       The change operation is not implemented.  Therefore, you should first add the new route, and then delete the old one.

Diagnostics
       add [host | network] %s: gateway %s flags %x"
       The specified route is being added to the tables.  The values printed are from the routing table entry supplied in the ioctl call.  If  the
       gateway	address  used  was not the primary address of the gateway (the first one returned by the gateway address is printed numerically as
       well as symbolically.

       delete [ host | network] %s: gateway %s flags %x
       The specified route is being deleted from the tables.  The values printed are from the routing table entry supplied in the ioctl call.	If
       the  gateway  address used was not the primary address of the gateway (the first one returned by the gateway address is printed numerically
       as well as symbolically.

       %s %s done
       When the flag is specified, each routing table entry that is deleted is indicated with a message of this form.

       Network is unreachable
       An attempt to add a route failed because the gateway listed was not on a directly-connected network.  The next-hop gateway must be given.

       not in table
       A delete operation was attempted for an entry which was not present in the tables.

       routing table overflow
       An add operation was attempted, but the system was low on resources and was unable to allocate memory to create the new entry.

See Also
       intro(4n), routed(8c)

																	 route(8c)
All times are GMT -4. The time now is 02:07 PM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy