Read Config File From Cisco Router Using C#

[bingxunnn]

Hi i want to read the configuration stored in cisco router without using puTTY or hyper terminal (serial interface) purely using C# and retrieve the configuration files. is this possible?

[Reza Nashvi]

Hi Bing,

You must see something like this in your pcap file. RST flag means reset.

192.168.3.10   192.168.1.23   TCP [TCP ACKed lost segment] 8004 > 60179 [RST, ACK] Seq=1 Ack=45320348 Win=0 Len=0

Don't look for exact same output as it will be different only RST part will be the same. If you haven't played with wireshark before I don't recommend it as it might be confusing.

You don't need to plug in directly all you have to do is following:

1) Use another computer with no AV installed.

2) Disable firewall.

3) Make sure you can reach the router IP.

4) Try tftpd64 again.

[bingxunnn]

Hi Reza,

all the computers in my lab has AV installed and firewall enabled. I tried the solution you give but could not work

I also tried using cross cable to plug the router to my computer also encounter the same error.is there anyway i could check the port 69 is it block by the firewall? or is there any other solution you could advice?

Thanks reza!

[bingxunnn]

Yes my router has snmp enabled.  May I know how I do using C#?

[Joseph W. Doherty]

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You should be able to obtain the config directly from the device if you have SNMP enabled.