Re: [CentOS] trouble shooting slow ssh logins

2010-01-22 Thread Geoff Galitz
The ipv6 line was strange but I read a while back, some tech note about ensuring that is your last line in hosts. Perhaps IPv6 is enabled. I had a few instances where I turned it off during install, but found it enabled at runtime. I had assumed I was being careless during install... but

Re: [CentOS] trouble shooting slow ssh logins

2010-01-22 Thread Waleed Harbi
*You may have a firewall, try check iptable using iptable -L cmd, if you see rolls try stop **iptable **service just for checking and test ssh*. -- Best Wishes, Waleed Harbi Dream | Do | Be On Fri, Jan 22, 2010 at 3:09 PM, Geoff Galitz ge...@galitz.org wrote: The

[CentOS] trouble shooting slow ssh logins

2010-01-21 Thread aurfalien
Hi all, I noticed that my ssh logins to a particular server were taking up to 5 seconds to finally login. My tcpdump -vv weren't producing much output (not good) and my pings to and from that host were normal and almost identical to other hosts on my subnet that had no ssh login delay

Re: [CentOS] trouble shooting slow ssh logins

2010-01-21 Thread nate
aurfal...@gmail.com wrote: Hi all, I noticed that my ssh logins to a particular server were taking up to 5 seconds to finally login. This is frequently a DNS issue, is forward+reverse DNS functional? You can also run SSH in debugging mode on the server, and increase verbosity on the client.

Re: [CentOS] trouble shooting slow ssh logins

2010-01-21 Thread aurfalien
aurfal...@gmail.com wrote: Hi all, I noticed that my ssh logins to a particular server were taking up to 5 seconds to finally login. This is frequently a DNS issue, is forward+reverse DNS functional? DNS was normal, forward reverse lookups exist and match that host. I'll turn on ssh debug

Re: [CentOS] trouble shooting slow ssh logins

2010-01-21 Thread Ian Murray
- Original Message From: aurfal...@gmail.com aurfal...@gmail.com To: CentOS mailing list centos@centos.org Sent: Thu, 21 January, 2010 20:07:27 Subject: Re: [CentOS] trouble shooting slow ssh logins aurfal...@gmail.com wrote: Hi all, I noticed that my ssh logins

Re: [CentOS] trouble shooting slow ssh logins

2010-01-21 Thread aurfalien
- Original Message From: aurfal...@gmail.com aurfal...@gmail.com To: CentOS mailing list centos@centos.org Sent: Thu, 21 January, 2010 20:07:27 Subject: Re: [CentOS] trouble shooting slow ssh logins aurfal...@gmail.com wrote: Hi all, I noticed that my ssh logins to a particular

Re: [CentOS] trouble shooting slow ssh logins

2010-01-21 Thread Amos Shapira
2010/1/22 aurfal...@gmail.com: The DNS server also behaved regarding name/ip addy lookups. This server is a Zimbra mail server which during install, checks for proper DNS configs.  I usually check proper functioning DNS by hand anyways. The ipv6 line was strange but I read a while back,