similar to: Cipher 'none'

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I've patched my local OpenSSH (currently 2.9p2, but the same patch applies to 3.0.2) to allow the cipher 'none' for both SSH1 and SSH2 connections. With SSH1, there is already code to print a warning that any password you enter will be sent in plain text. However the userauth_passwd() in sshconnect2.c does not have any such warning. I

Below is a patch that adds the ability to have a none cipher and mac for protocol version 2. By default, sshd will not allow these to be used; an admin will have to explicitly allow them in the Ciphers and MACs section of sshd_config. Additionally, the client will not use these unless explicitly instructed to by the user. The actual name of the cipher is 'none2', to distinguish it

I have a simple pair of nodes set up, connected wirelessly, with tincd 1.0.16 running in switch mode. Setting Cipher and Digest to "none", and Compression to 0, the bridge is still CPU-bound, with most of tincd's CPU time spent in libcrypto. I narrowed it down to this line in net_setup.c: myself->connection->outcipher = EVP_bf_ofb(); It looks as though all outgoing data is

Hello all, I tried to connect to the server that supports protocol 1: # ssh -1 -o "cipher none" remotehost <No valid SSH1 cipher, using 3des instead> As per the code in sshconnect1.c, it has to alert the user about "none" cipher usage. try_challenge_response_authentication() { .... if (options.cipher == SSH_CIPHER_NONE)

Hello, Does anybody know how cam I enable the usage of the 'none' cipher in OpenSSH 4.7 yours, Mihai

Using stock OpenSSH 4.7 I found different behavior when trying to specify the use of the 'none' cipher depending on the command line option nomenclature. This is under linux 2.6.19-web100 using -ocipher=none [root at delta openssh-4.7p1-hpnv19]# /home/rapier/ssh47/bin/scp -S /home/rapier/ssh47/bin/ssh -ocipher=none -P 2222 ~rapier/2gb rapier at localhost:/dev/null rapier at

While compiling openssl with option `no-des', it caused the openssh build failure ... cipher.c:85:41: error: 'EVP_des_ede3_cbc' undeclared here (not in a function); ... Signed-off-by: Hongxu Jia <hongxu.jia at windriver.com> --- cipher.c | 2 ++ configure.ac | 20 ++++++++++++++++++++ 2 files changed, 22 insertions(+) diff --git a/cipher.c b/cipher.c index

We are trying to upgrade from SSH1 to OpenSSH/SSH2. I see that configuration support for "cipher NONE" was removed in OpenSSH. Is there an alternative for this ? We need to move big files (>100Mb) between machines on the Internet. In the past we had used NFS or ftp but want to block those services at one or both ends. Moving them with SSH 1 scp takes quite a bit of CPU effort for

Hi all, Is there a straightforward way to enable the none cipher for v1 and v2 in the server? Please include my email address in your reply, as I'm not subscribed to this list. Thanks! Mordy -- Mordy Ovits Network Engineer Bloomberg L.P.

Hi, I'd like to argue in favor of bug #877 ( https://bugzilla.mindrot.org/show_bug.cgi?id=877) from a new perspective. Instead of performance, I wish to raise the issue of regulatory compliance and auditing. I read all of #877 and I understand the arguments for and against, but I felt at the end the decisive comment by Damien was mostly based on 'We don't want users to use

https://bugzilla.mindrot.org/show_bug.cgi?id=1430 Summary: Restore support for "none" cipher, i.e., unencrypted connections Classification: Unclassified Product: Portable OpenSSH Version: 4.7p1 Platform: Other OS/Version: Other Status: NEW Severity: normal Priority: P2

Hallo to everyone! First I would like to thank everybody for making a free implementation of ssh available. I am administrating the network at the computer science department of the University of Munich. Here, rcp (as in many other places, I guess) is banned for security reasons. I, aswell as others, use scp regulary to copy files from one machine to another. The problem is, that the transfer

Hi, Is cipher "3des-ctr" supported by openssh? It is not mentioned in the list of supported ciphers in the man page of ssh_config: Thanks, Sunil Ciphers Specifies the ciphers allowed for protocol version 2 in order of preference. Multiple ciphers must be comma-separated. The supported ciphers are ''3des-cbc'', ''aes128-cbc'',

Hello, I understand that I can use the openssl ciphers and digests available on my systems, i.e. those in the list generated by "openssl list-cipher-commands" and "openssl list-message-digest-algorithms". I want to create a admin vpn network between my servers and my workplace. Network throughput is not a big issue, I am using ssh and the cli, however I would also do

I am trying to get tinc to use aes-128-cbc for it's encryption algorythm for network traffic. So far, I'm not having any luck. I've tried putting it into the tinc.conf file, and it turns out that tinc is ignoring that code completely. I'm using tinc 1.0.4 (in TCP mode). Openssl version 0.9.7d. I've made some initial investigation into the source, and in net_setup.c I

Hello everybody, An issue was reported in RH bugzilla [1] about the size of the used DH group when combined with the 3des-cbc cipher. OpenSSH uses the actual key length for the size estimation. This is probably fine as far as the cipher has the same number of bits of security as the key length. But this is not true for 3TDEA where the key size is 168 resp 192 but it's security is only 112.

Hello everybody, First a big thanks for tinc-vpn I am still using it next to wireguard and openvpn. I am having a setup where the tinc debian appliance is at 100% cpu load doing about 7.5MB/s. Compression = 9 PMTU = 1400 PMTUDiscovery = yes Cipher = aes-128-cbc How can I pick a cipher that is the fasted for my CPU and don't create a CPU bottleneck at 100%. Kind regards, Jelle de Jong

http://bugzilla.mindrot.org/show_bug.cgi?id=1340 Summary: Support for Camellia block cipher to OpenSSH-portable. Product: Portable OpenSSH Version: -current Platform: All OS/Version: All Status: NEW Severity: enhancement Priority: P2 Component: Miscellaneous AssignedTo: bitbucket at mindrot.org

Hi, I was looking at the thread on the 'null' cipher and was wondering if you have done anything one it, if you need any help (or just encouragement ;)). I'm a radio experimenter (radio ham) and currently I'm using ssh illegally over the air, as I'm not legally allowed to encrypt sessions over the Radio Link. Being able to have strong authentication with no

Hi, i try to etablish unencrypted onnection and have in my config: Cipher=aes But this causes the following error: 2018-05-23 12:08:27 tinc.backbone[14746]: tincd 1.0.31 starting, debug level 5 2018-05-23 12:08:27 tinc.backbone[14746]: Got fatal signal 11 (Segmentation fault) 2018-05-23 12:08:27 tinc.backbone[14746]: Trying to re-execute in 5 seconds... I have no idea what i'm doing